hedgehog and ptch1 protein loss would likely promote hedgehog pathway activation .
Hedgehog signaling pathway transmits information to embryonic cells required for proper cell differentiation. Hedgehog (Hh) pathway is a major regulator of many fundamental processes in vertebrate embryonic development including stem cell.
Hedgehog signaling pathway is a mechanism that directs the development of embryonic cells in animals, from invertebrates to vertebrates. PTCH1 gene provides instructions for producing the patched-1 protein, which functions as a receptor these receptor works for the cell development and function .
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blood flows through a coronary artery that is partially blocked by deposits along the artery wall. blood flow through which part of the artery is the flux (mass of blood per unit time) largest?
Blood flows through a coronary artery that is partially blocked by deposits along the artery wall then blood flow through which part of the artery is the flux largest: flow rate is the same in both parts.
How does blood flow?Blood flows through a network of vessels that is called the circulatory system. When blood returns to the heart, it flows to the lungs to receive oxygen. Then the heart pumps the blood out to the rest of body and the process begins again.
Coronary arteries supply blood to the heart muscles which needs oxygen-rich blood to function and oxygen-depleted blood must be carried away.
Coronary arteries receive the maximum blood flow during diastole because this is when the heart is relaxed, and they receive least blood flow during systole because this is when the myocardium contracts are decreasing the blood flow through coronary arteries.
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14. Problem: Uranium-238 has a mass number of 238 with 146 neutrons in the
nucleus. An isotope, Uranium-235 has 143 neutrons in the nucleus. What is
the atomic number of Uranium?
The atomic number of Uranium is 92.
Uranium is a silvery-white steel chemical element in the periodic desk, with atomic number ninety two. it's miles assigned the chemical image uranium atom has 92 protons and ninety two electrons, of which 6 are valence electrons. Uranium has the highest atomic weight of all certainly occurring elements.
Normally, the best potential radiation-associated health threat for uranium mining or processing facility people is lung most cancers associated with inhaling uranium decay products, as well as other non-lung-most cancers dangers associated with gamma radiation exposure on-website online.
Uranium is obviously radioactive: Its nucleus is volatile, so the detail is in a constant country of decay, looking for a more solid association. In fact, uranium become the detail that made the invention of radioactivity possible.
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4. Consider the structural formulas of ATP, ADP, and phosphate in Model 2 carefully. What happens to the atoms from the water molecule during the hydrolysis of ATP?
The water molecule its going to break and its OH group attaches to the phosphate that is removed from the ATP.
What is hydrolysis?Hydrolysis is when a water molecule reacts with another macromolecule and it hydrates. What happens then is that the water molecule splits and releases an OH and the other part of the H2O is going to join the molecule forming part of the new chemical bond.
In ATP hydrolysis, the chemical bonds of ATP, which are high-energy bonds, are broken, resulting in the formation of ADP and an inorganic phosphate, which is to which the OH binds.
ATP hydrolysis occurs when energy is needed for a reaction, since ATP bonds have a lot of energy. It is used in many processes in the body, such as muscle contraction, transport of substances against a gradient.
Therefore, we can confirm that the water molecule its going to break and its OH group attaches to the phosphate that is removed from the ATP.
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a hemoglobin molecule can bind up to four oxygen molecules on the iron atom in a heme group and experiences cooperative binding, which means that as oxygen molecules are added to one heme group, it is easier to add another oxygen molecule to one of the other heme groups. in other words, through cooperative binding, once a deoxyhemoglobin molecule, which has a low affinity for oxygen, starts to bind oxygen it more easily binds additional oxygen molecules and once a hemoglobin molecule starts to release oxygen, it more readily releases additional oxygen. how does cooperative binding relate to oxygen use during rest and strenuous exercising? (choose all that apply)
Because muscles do not require oxygen while a person is at rest, hemoglobin uses less oxygen. When a person transitions from rest to exercise, hemoglobin molecules are released into the muscles.
What does a low hemoglobin level mean?Hemoglobin levels may fall if an illness or condition interferes with your body's capacity to make red blood cells. Your body isn't receiving enough oxygen when your haemoglobin level is low, which makes you feel extremely exhausted and weak.
Why does hemoglobin level rise?When your body needs more hemoglobin to carry oxygen, which typically happens when you smoke, your hemoglobin count rises. You produce more red blood cells naturally if you reside at a high altitude to make up for the area's lower oxygen levels.
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. describe the three processes contributing to urine formation and indicate which way the fluids are moving
Urine is created primarily through three processes: glomerular filtration, reabsorption, and secretion. Only waste and extra water are removed from the body thanks to these procedures.
What procedures make up glomerular filtration?The glomerulus filters your blood, and the tubule restores nutrients to your blood and eliminates wastes, in the two-step process by which the nephrons function. Each nephron contains a glomerulus to filter blood and a tubule to return necessary substances to blood while expelling extra waste.
What exactly does reabsorption entail?Reabsorption. Reabsorption is the process by which water and other solutes are returned to the plasma from the tubule. Various amounts of water and specific solutes are reabsorbed over the whole length of the renal tubule.
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if two genes are located on different chromosomes, what would you expect their recombination frequency to be? %
The expected recombination frequency for two genes located ok different chromosomes would be 50%.
We can inquire "What is the recombination frequency between them" for any two genes (or loci) alpha and beta. Answer would be 50% if the genes are located on distinct chromosomes (independent assortment). Recombination frequency will fall between 0 and 50% if the two genes are located on the same chromosome.
The frequency with which two genes on a chromosome recombine during meiosis is known as the recombination frequency. Recombination occurs relatively seldom when genes on a chromosome are near to one another. The frequency of recombination is 50% when the genes are distant from one another or are located on different chromosomes.
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how long does it take for a fertilised human egg cell to develop into a fully formed baby?
Answer:40 weeks
Explanation:
Within 24 hours of fertilization, the zygote (two combined gametes) begins to divide into many cells. Within 8 weeks of pregnancy, the embryo is now a fetus, and the total development time from a zygote to a fully formed fetus is 40 weeks, typically.
what is the first piece of evidence that the mitochondria and chloroplast were once their own organism?
It was the endosymbiont theory which suggested that mitochondria and chloroplast were once their own organism. Researchers discovered that the DNA in the mitochondria and plastids of plant cells was unique.
The fact that mitochondria contain their own DNA, cell-independent division, and morphological similarities to alpha-proteobacteria are only a few of the facts that indicate they were once autonomous organisms. Chloroplasts, which resemble small green factories inside plant cells and aid in converting solar energy into sugars, share many characteristics with mitochondria. These chloroplast organelles may have formerly been free-living bacteria, according to the research.
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even though the human brain is larger than the sheep brain, the sheep brain has more gyri and sulci than the human brain. True or False
The given statement is false.
Because the human brain has a higher surface area than the sheep brain and because the human brain contains more sulci and gyri, the human brain has more contours than the sheep brain.
Features/Gross Sheep Human
Brain shape Smaller and elongated Larger and rounded
Skull thickness (mm) 5.0–6.0 6.5–7.5
Brain mass (g) 130–140 1,300–1,400
Gyri and sulci are the names for the folds and grooves in a brain, respectively. The cortex, the area of our brain responsible for higher cognitive functions including memory, language, and awareness, folds to generate these physical characteristics.
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The given statement is false.
Because the human brain has a higher surface area than the sheep brain and because the human brain contains more sulci and gyri, the human brain has more contours than the sheep brain.
Features/Gross Sheep Human
Brain shape Smaller and elongated Larger and rounded
Skull thickness (mm) 5.0–6.0 6.5–7.5
Brain mass (g) 130–140 1,300–1,400
Gyri and sulci are the names for the folds and grooves in a brain, respectively. The cortex, the area of our brain responsible for higher cognitive functions including memory, language, and awareness, folds to generate these physical characteristics.
intervertebral discs comprised of fibrocartilage are found within what type of joints? multiple choice question. symphyses syndesmoses synchondroses sutures
Intervertebral discs comprised of fibrocartilage can be found at the symphyses.
Intervertebral discs are discs made of cartilage that function to prevent spinal structures from rubbing against each other and serve as cushions for the spine. Cartilage which is made of dense, clear, bluish-white and very strong material has two types of joints, one of which is the symphysis joint where the bones are connected by flat fibrocartilage discs which remain unhardened throughout life., for example, the intervertebral disc and pubic symphysis which join the pub part of the right and left vertebrae. For this reason, the symphysis joint is often referred to as a fibrocartilaginous joint.
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Certain reactions in cells are endergonic. How do cells make those reactions proceed?.
The endergonic reactions of the cell are proceeded by their coupling with the ATP hydrolysis.
Endergonic means the reactions that requires the input of energy for them to proceed. In these reactions, the free energy is positive. Thus, the Gibb's free energy is said to be positive. Most of the reactions inside the living organisms is endergonic, for example photosynthesis.
ATP hydrolysis is the break down of the phosphate group attached by phospho-anhydride bonds from the triphosphates of adenosine. This breakdown releases very high amounts of energy which can be used to drive some other processes of the living organisms.
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which of the statements correctly contrasts anabolic and catabolic pathways?anabolic pathways are exothermic, whereas catabolic pathways are endothermic.anabolic pathways are aerobic, whereas catabolic pathways are anaerobic.anabolic pathways are biosynthetic, whereas catabolic pathways are degradative.anabolic pathways are exergonic, whereas catabolic pathways are endergonic.
The statement that correctly contrasts anabolic and catabolic pathways is: (3) Anabolic pathways are biosynthetic, whereas catabolic pathways are degradative.
Anabolic pathways are biosynthetic that means they are involved in the formation of molecules. The process combines smaller molecules to form large macromolecules. This process usually requires the input of energy. It is a part of metabolic reactions. The example is synthesis of glycogen from glucose.
Catabolic pathways are also a set of metabolic reactions. It is a degradative pathway because it breaks the large macromolecules into smaller units. The pathway usually releases energy. The examples are glycolysis, beta oxidation, etc.
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5. At one time, interphase was referred to as the
resting phase of the cell cycle. Why do you think
this description is no longer used?
Answer:
ddddddddddddddddddddddddddddddddd
Explanation:
throughout the 1920s, otto meyerhof, a. v. hill, and colleagues investigated how cells use energy to power muscle contraction. they determined that during muscle contraction, glycogen is broken down into lactic acid, a product of fermentation. originally meyerhof thought that the conversion of glycogen into lactic acid directly powered muscle contraction. this idea was overturned by experiments performed by einar lundsgaard. what evidence did lundsgaard provide to suggest that glycogen breakdown and lactic acid production did not directly power muscle contraction?
After fermentation inhibition, muscle contraction could continue for a while.
What was his evidence?
It was shown by Lundsgaard that muscles still contract when in glycolysis, the formation of lactic acid is inhibited by the use of iodoacetate pharmacologically.
He also showed that during muscle contraction, pcr gets broken down and the breakdowns extent is proportional to tension created. On the idea of those experiments, Lundsgaard cautioned that the breakdown of PCr changed into the number one energy‐presenting response and this is what initiated the lactate‐forming reactions which regenerated PCr.
Therefore, for contraction, glycogen to lactate conversion is not necessary.
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what do each of the genes involved in maturity-onset diabetes of the young (mody) have in common?
The genes involved in maturity-onset diabetes of the young (MODY) have in common that they each play a role in metabolism of glucose, or insulin action and release.
What is metabolism?The group of chemical processes in organisms that maintain life is known as metabolism. The three primary functions of metabolism are the transformation of food's energy into cellular energy, the synthesis of proteins, lipids, nucleic acids, and certain carbohydrates, and the removal of metabolic wastes. Organisms may grow and reproduce, maintain their structures, and react to their environments thanks to these enzyme-catalyzed processes.
What do you understand by MODY?MODY, which stands for "Maturity-onset diabetes of the young," was previously known as Type 2 diabetes in adults because of how similar it behaved to Type 2 diabetes in young people. MODY is distinct from the juvenile form of diabetes in that it restricts the body's ability to manufacture insulin (Type 1 Diabetes).
Thus from above conclusion we can say that the genes involved in maturity-onset diabetes of the young (MODY) have in common that they each play a role in metabolism of glucose, or insulin action and release.
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the cells that attack damaged arteries causing inflammation and decreased blood flow are? group of answer choices beta cells chief cells parietal cells foam cells
The correct answer is option D.
The cells that attack damaged arteries causing inflammation and decreased blood flow are foam cells.
What are foam cells?
In general, foam cells are also known as macrophages or fatty streaks.
These cells consists of lipids that are eaten by macrophages or white blood cells.
When an invader enters into body, macrophages surround them and engulf them. In this way, these cells are consuming cholesterol which accumulates over time and block the arteries.
to put it simply, foam cells are fluffy macrophages filled with cholesterol. These cells create hindrance in blood flow and cause inflammation in arteries.
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a mitotic daughter cell has just been formed and contains 12 non-replicated chromosomes. how many replicated chromosomes were contained in the parent cell before the two daughter cells were formed?
During mitosis, the number of replicated chromosomes contained in the parent cell before two daughter cells are formed is still 12 chromosomes.
The number of chromosomes does not change during mitosis. The phase in which the cell prepares for division is called interphase. If a cell has 12 chromosomes during interphase, the number of chromosomes in each daughter cell remains 12 even after mitosis ends.
The characteristics of mitosis are:Cleavage takes place once.The number of daughter cells produced is two.The number of chromosomes in the daughter cells is the same as the number of chromosomes in the parent cell, which is 2n (diploid).The properties of the daughter cells are the same as those of the parent.Occurs in body cells (somatic cells) for example in embryonic tissue, including root tips, stem tips, and cambium circles.The mitotic division aims to multiply cells such as the growth or repair of damaged cells.Learn more about mitosis here https://brainly.com/question/23750975
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Determine the proportion of various phenotypes of offspring that this couple may have.
This pair may have 1/8 type O with N antigens kids, which is a proportion of different phenotypes.
The man's genotype is I⁰I⁰ and the woman's genotype is IᵃI⁰ because the man has type O blood and the woman has children with him. Their offspring's genotypes will be as follows:
F/M I⁰ I⁰
Iᵃ IᵃI⁰ IᵃI⁰
I⁰ I⁰I⁰ I⁰I⁰
Children with O group blood have a 0.5 chance of being born, and children with A group blood have a 0.5 chance. The MN antigen is heterozygous for both people. Following are the odds of inheriting MN antigens:
F/M M N
M MM MN
N MN NN
0.25 percent of people have the homozygous M antigen type.
The likelihood of having the MN antigen type is 0.5.
0.25 percent of people have homozygous N antigen types.
As these two events are independent of one another, the chance of ABO blood group and MN antigen inheritance is the product of their individual probabilities.
Type A with M antigen is equal to 0.5 x 0.25 x 0.125 x 1/8.
Antigens M and N in Type A = 0.5 x 0.5 x 0.25 x 1.4
N antigen type A = 0.5 x 0.25 x 0.125 x 1/8
Type O antigen M = 0.5 0.25 0.125 1/8
Type O antigens M and N = 0.25 = 1/4
0.125 = 1/8 for type O with N antigens.
In the event that both parents are heterozygous for the gene (Hh) in charge of the synthesis of the H substance, then
Type A: 3/32 with M antigen
Antigen type A with M and N: 6/32
Type A: 3/32 with N antigen
5/32 for type O with M antigen.
Antigens M and N for type O: 10/32
5/32 for type O with N antigens.
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COMPLETE QUESTIONS:
A woman with type A blood (whose father was type O) has children with a man that has type O blood. Both individuals are heterozygous for the MN antigen.
Recall that MN blood group antigens are independent of the ABO locus, and that the alleles are codominant.
Determine the proportion of various phenotypes of offspring that this couple may have.
Type A with M antigen:
Type A with M and N antigens:
Type A with N antigen:
Type O with M antigen:
Type O with M and N antigens:
Type O with antigen:
Options: 0, 1/8, 1/4, 1/2, 3/4, 1
How would the results from Part A change if both parents are also heterozygous for the gene controlling the synthesis of the H substance (Hh)?
Type A with M antigen:
Type A with M and N antigens:
Type A with N antigen:
Type O with M antigen:
Type O with M and N antigens:
Type O with antigen:
Options: 0, 1/32, 3/32, 5/32, 6/32, 10/32, 1
which new fossil find would favor the arboreal hypothesis for primate origins over the visual predation hypothesis?
According to the visual predation hypothesis, features of primates evolved as a result of their ability to hunt insects and other small animals.
What is hypothesis the meaning?In a scientific setting, a hypothesis (plural: hypothesis) is a tested claim regarding the connection between two or more factors or a suggested explanation for a phenomenon that has been observed.
What is an example of hypothesis?Several illustrations of basic hypotheses: In comparison to kids who skip breakfast, those who eat breakfast perform better on arithmetic exams. "Pupils who have test anxiety first before English exam do worst than the pupils who do not suffer from anxiety levels," complex.
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Without the circulatory and respiratory systems, human bodies would not survive. Both systems play major roles in providing our bodies with what they need. They work individually as well as together to keep us alive and healthy,
Which four statements describe functions of the circulatory system?
Responses
A Part of this system filters air as it enters the body.Part of this system filters air as it enters the body.
B This system's organs passes oxygen into the bloodstream.This system's organs passes oxygen into the bloodstream.
C This system plays a major role in fighting infections.This system plays a major role in fighting infections.
D Oxygen is delivered to cells throughout the body by this system.Oxygen is delivered to cells throughout the body by this system.
E Carbon dioxide exits the body through this system.Carbon dioxide exits the body through this system.
F This system takes in oxygen from air outside the body.This system takes in oxygen from air outside the body.
G This system removes carbon dioxide from organs and delivers it the lungs.This system removes carbon dioxide from organs and delivers it the lungs.
H Nutrients are delivered to organs through this system.
Circulatory systems have different kinds of functions, gaseous exchange, nutrient transportation, and fighting with infection, hence option c,d,g, and h is correct.
What is the function of the circulatory system?Blood arteries within the circulatory system move blood away from and toward the heart. Arteries transport blood away from the heart, and veins transport blood back to the heart.
The circulatory system delivers oxygen, nutrients, and hormones to cells also while eliminating contaminants such as carbon dioxide.
The heart, blood, and blood arteries each work together to feed the body's cells. Blood transports carbon dioxide to the lungs (for exhale) and pulls up oxygen via the network of arteries, veins, and capillaries.
Therefore doing different functions by the circulatory system, hence option c,d,g, and h is correct.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer: D a balance system
Explanation: even though they can go through many different changes both over short and long periods of time, when uninterrupted they usually evolve and change for the better.
Hope this helps :)
Tilapia prefer water with a dissolved oxygen concentra-
tion of at least 3 ppm so that the oxygen will diffuse
from the water (higher concentration) into the fish
(lower concentration). Imagine you are an AgWorks in-
tern, and you test the dissolved oxygen level of the
tilapia tank. You read a result of 1 ppm.
Answer the following questions that describe why this
test result is a concern for the tilapia.
1. Explain if the level of dissolved oxygen level of 1 ppm
is too high or too low
2. In what direction will the oxygen will travel across the
cell membranes of the fish - from the water into the
fish-or- from the fish into the water
3. What is the type of cellular transport that is taking place
if the oxygen travels across the cell membranes from
high concentration to low concentration - simple
diffusion, active transport or osmosis
1.A 1 ppm level of dissolved oxygen is too low.
2.The oxygen will cross the cell membrane toward the direction of the fish.
3.If oxygen moves from a high concentration to a low concentration across the cell membranes, osmosis is the type of cellular transport that is occurring.
Is osmosis the same as active transport?Water molecules diffuse through a semi-permeable membrane during osmosis as they travel along a concentration gradient. Moving a substance up or down a concentration gradient is called active transport.
Osmosis is a type of passive transport where water molecules move from a high water concentration to a low solute concentration or vice versa through a membrane that is impermeable to the solute. Passive transport is referred to as "facilitated diffusion."
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please help me im giving 15 points
Answer: Polymer
Explanation: It is made of alkenes joining together to form long complex compounds. The process is called polymerization.
Construct a flowchart to describe the process by which a foreign gene is inserted into the genome
Genome editing is the process by which a foreign gene is inserted into the genome.
What is the process of inserting foreign genes into an organism?Animals given new genes by this method are called "transgenic." Their new genes are usually passed on to their progeny. These foreign genes can be conveyed, that is, make their protein products, which can consult new characteristics on the animal.
When foreign DNA is initiated into an organism, it is called a genetically modified organism or transgenic organism. It is inserted with the help of vectors into the receiver organism. It then becomes an integral part of the host's genome like other indigenous genes, due to recombination.
So we can conclude that A transgenic, or genetically modified organism is one that has been altered through recombinant DNA technology.
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Select the most accurate example of a food chain:
grass--->Rabbit--->snake--->hawk
rabbit--->hawk--->grass--->snake
snake-->rabbit--->grass--->hawk
hawk--->snake--->rabbit--->grass
Answer:
The last one;
hawk--->snake--->rabbit--->grass
Explanation:
Answer:
grass--->Rabbit--->snake--->hawk
Explanation:
the grass is the producer(as it has energy) so the rabbit eats the grass,then the snake eats the rabbit and then the hawk eats the snake
a bacterium is in a capillary tube that contains a gradient of both attractant (glucose) and a repellent (hydrogen peroxide). where will the bacteria concentrate?
The bacteria concentrate will be somewhere in the middle.
What are the role of bacteria in life on earth?Bacteria are a group of organisms that do not have a cell nucleus membrane. These organisms belong to prokaryotes and they are very small in size and have an important role in life on earth. Some groups of bacteria are known to cause infection and disease, and others can provide benefits in the fields of food, medicine, and industry.Attractants can also be referred to as attention grabber, which are chemicals that can cause insects to move closer to the source of these substances.Hydrogen peroxide may be a chemical compound with the formula H₂O₂. In its immaculate shape, it may be a clear, pale blue fluid, somewhat thicker than water. Hydrogen peroxide is the only peroxide. H₂O₂ is utilized as an oxidizing specialist, fading operator, and clean.Learn about bacteria here: brainly.com/question/8008968
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the pedigrees of the european royal families show that queen victoria's daughters carried hemophilia, which had important consequences in european history. what are the consequences of hemophilia?
Joint bleeding that can cause discomfort and persistent joint disease Head and occasionally brain bleeding, which can lead to long-term issues like seizures and paralysis.
What outcome of untreated haemophilia is most likely?Frequent internal bleeding, if left untreated, can lead to arthritis or joint degeneration. Infection. Human blood-derived clotting factors used to treat haemophilia increase the risk of viral infections like hepatitis C.
What is the most typical haemophilia complication?Joint Injury. Joint arthritis is the most frequent haemophilia consequence. A joint is where two bones come together. Hemophiliacs occasionally bleed into the joint space for no obvious reason or after an accident.
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the lungs do not normally collapse because of group of answer choices their characteristic elastic recoil both surfactant and intrapleural pressure none of the choices are correct intrapleural pressure surfactant
The lungs do not normally collapse because of both surfactant and intrapleural pressure.
The two spongy, pinkish-gray organs in your chest are called lungs. Air enters your lungs when you inhale (breath), and the oxygen in that air travels to your blood. A waste gas called carbon dioxide travels from your blood to your lungs at the same time and is exhaled (breathed out).
The pressure drop lowers the intrapulmonary pressure as well, which causes the lungs to open up and take in more air. This action is the opposite after the timer expires. The pleural cavity's negative pressure acts as a suction to prevent the lungs from collapsing.
The lung cells secrete surfactant, which distributes throughout the alveolar tissue. By reducing surface tension, this chemical facilitates breathing by preventing the alveoli from collapsing following exhalation.
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Describe two problems in the loop you have created that can produce an imbalance of sugar in the blood and lead to diabetes.
If the pancreas does not have the ability to release insulin and If the insulin released by the pancreas does not correctly bind to the insulin receptors.
When a person has diabetes, their pancreas is either unable to produce any insulin or not enough insulin to control blood sugar levels. The absence of insulin prevents the body from using glucose as a fuel source.
If the pancreas is unable to release insulin or if the insulin it does release fails to properly attach to the insulin receptors. A lack of insulin can result in too much glucose in the blood, which can upset the equilibrium. Your body may create too much insulin, which may lead to a sugar imbalance and low blood sugar levels.
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which of the following individuals theorized that human characteristics and behaviors may be hereditary and serve evolutionary purposes? elimination tool select one answer a william james b wilhelm wundt c sigmund freud d b. f. skinner e charles darwin
According to Charles Darwin, human traits and actions may be inherited and used for evolutionary goals. The correct option for given question is e
Charles Darwin introduced the Theory of Evolution by Natural Selection in his 1859 publication "On the Origin of Species." Darwin describes in his book how creatures change over generations through the inheritance of physical or behavioral features. As illustrated by one of the Galapagos finches Darwin studied and the form of its beak, the theory's central principle is that features can change within a population.
The theory holds that individuals who have traits that make it simpler for them to adapt to their environment will help them survive and have more offspring, who will inherit those traits. People that are less flexible are less likely to survive and pass those traits on.
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