Answer:
Gene flow is the transfer of genes in and out of a population.
2. Geneflow affect the fitness ofva population.
Gene flow within a population can cause an increase in the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations.
Index fossil is any animal or plant preserved in the rock record of the Earth that is use to identify and gate geologic periods.
Explanation:
Gene flow is the transfer of genes or genetic variation in and out of a population.
Gene flow is cause by movement of organisms that reproduce in their new population or movements of gametes. For example, when bees carry pollen from a flower in one location to flowers in another location, the bees are causing gene flow.
Gene flow within a population can cause an increase in the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations. Thereby affecting it's genetic fitness.
Index fossil is any animal or plant preserved in the rock record of the Earth that is use to identify and gate geologic periods. Examples of index fossils include: Ammonites were common during the Mesozoic Era (245 to 65 mya
What impact does altitude have on pressure?
Answer:
As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level.
Explanation:
Thin air exerts less pressure than air at a lower altitude.
From watching his wife struggle to keep track of the family finances, Intuit founder Scott Cook identified the need for easy-to-use financial software that provided a single place for managing bills, bank accounts, and investments. This is an example of which innovator DNA trait
Answer:
It is observing
Explanation:
In observing innovator DNA trait, innovators or observers carefully and consistently search out for any little behavioral details in the activities of customers, suppliers, and other companies so that they will gain insights and knowledge about new ways of doing things.
From watching his wife struggle to keep track of the family finances, Intuit founder Scott Cook identified the need for easy-to-use financial software that provided a single place for managing bills, bank accounts, and investments is observing because he look out carefully for any little behavioral details in on how his wife handle business related financial activities in the home so that he will gain new insights on how to do things in a new way.
What two characteristics of life are evident in viruses?
Please help me with this question
Answer:
Viruses do, however, show some characteristics of living things. They are made of proteins and glycoproteins like cells are. They contain genetic information needed to produce more viruses in the form of DNA or RNA. They evolve to adapt to their hosts.Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.
name three factors needed for germination to occur in plants
Answer:
Three factors needed for germination to occur in plants:
1 - water
2 - sunlight
3 - air
In order for translation to occur: Please choose the correct answer from the following choices, and then select the submit answer button. transcription must be occurring simultaneously. there must be large numbers of free amino acids present in the cytoplasm. the DNA must produce large numbers of free amino acids. replication must be occurring simultaneously. the nuclear membrane must first dissolve
Answer:
there must be large numbers of free amino acids present in the cytoplasm
Explanation:
In order for translation to occur, there must be a large number of free amino acids in the cytoplasm.
These free amino acids are usually carried by the transfer RNA which also carries the corresponding mRNA codon.
During translation, as the codons in the mRNA match their complements in the tRNA, the amino acid being carried by the tRNA is released and a peptide bond is formed between subsequent amino acids until the required polypeptide bond is formed.
Translation and transcription only occur simultaneously in prokaryotic cells where there is no barrier between the cell's genetic materials and the cytoplasm, unlike in eukaryotic cells where the genetic materials are housed in the membrane-bound nucleus.
Natural killer (NK) cells __________. Natural killer (NK) cells __________. engage in immunological surveillance recognize and kill cancer cells cause abnormal cells to undergo lysis NK cells perform all of these roles.
Answer:
NK cells perform all of these roles
hope this helps
-lvr
Why is the frequency of natural disasters increasing? Select one: a. There are less natural hazards occurring. b. Human population in areas prone to natural hazards has increased. c. Deaths from natural disasters has decreased in developed countries and increased in developing countries.
Answer:
I hope option c is the correct answer.
Explanation:
As for option 1 its totally in correct. for option 2 human population is not always greater in the disaster places.for option three developed countries are developed with all the determined factors but developing countries dont see all the factors as they destroy nature while making road which causes landslide, which causes death.Hope it helps...
Answer:
Option C
Explanation:
I believe Option C is the correct answer
Which flowchart correctly lists the structures in order from smallest to largest?
gene Right-arrow DNA Right-arrow chromosome Right-arrow nucleus
gene Right-arrow chromosome Right-arrow DNA Right-arrow nucleus
DNA Right-arrow gene Right-arrow chromosome Right-arrow nucleus
DNA Right-arrow chromosome Right-arrow gene Right-arrow nucleus
Answer:
gene Right-arrow DNA Right-arrow chromosome Right-arrow nucleus
Explanation:
trust me I'm smart
Listing the structures in order from smallest to largest follows this sequence ( A ) ; Gene right arrow DNA right arrow Chromosome right arrow Nucleus
Gene is the basic unit of heredity in animals, they are made up of DNA strands, while chromosomes ( thread like structures ) are positioned inside the Nucleus of ( plant and animal cells ).
Chromosomes are comprised of proteins and single molecule DNA that are passed from parents to its offspring.
Hence we can conclude that the flowchart that lists the structures in order from smallest to largest follows this sequence ( A ) ; Gene right arrow DNA right arrow Chromosome right arrow Nucleus.
Learn more : https://brainly.com/question/11912112
URGENTT!
does a fire take food for energy?
does a fire reproduce?
does a fire produce waste?
Answer:
Yes, a fire takes food for energy.
No, a fire doesn't reproduce.
Yes, a fire produces waste.
Explanation:
For fire, the food that it requires is the objects that help in the process of burning. The objects can be wood, paper, coal, fuel, etc. Oxygen is required for the process of burning to take place.
The process of reproduction undergoes in living beings. Fire produces heat and light but this cannot be termed to be a process of reproduction.
Burning produces wastes in the form of ash and burned products. Therefore, it can be said that fire produces wastes.
The wells that contain the DNA samples are placed next to the negatively charged electrode in the electrophoresis box (chamber) because _______. Group of answer choices DNA strands have both a positive and a negative charge DNA is negatively charged DNA is positively charged DNA has no electrical charge
Answer:
DNA is negatively charged
Explanation:
Electrophoresis: In biology, the term "electrophoresis" is described as one of the different laboratory technique that is being utilized to separate protein molecules, DNA, and RNA one the basis of their electrical charge and size. Therefore, a specific amount of "electric current" is being used to move different molecules that are required to be separated through a "gel". The given gel contains pores that generally works like a "sieve" and thus allows every small molecule to proceed faster as compared to the larger molecules.
DNA stands for "deoxyribonucleic acid" is determined as a long molecule that ought to contain an individual's unique "genetic code" and generally carried information associated for making proteins in an individual's body.
In the question above, the correct answer is "DNA is negatively charged".
The samples of DNA are placed next to the negatively charged electrode in the electrophoresis as DNA is negatively charged.
What is electrophoresis?It is a laboratory technique, which is used to distinguish RNA, DNA or molecules of protein on the basis of their electrical charge and size. In the process, an electric current is utilized to move molecules to be separated via a gel. The gel comprises pores that functions as a sieve, which permits smaller molecules to move faster in comparison to larger molecules.
DNA is a negatively charged molecule, thus, when it is used in the process of electrophoresis, the migration of DNA will take place towards the positively charged electrode. Through the gel, the DNA with shorter strands will move more briskly in comparison to the longer strands leading to the formation of fragments being aligned in order of size.
Thus, the samples of DNA are placed next to the negatively charged electrode as they are negatively charged.
Find out more information about electrophoresis here:
https://brainly.com/question/2495408
Gastrin, histamine, endorphins, serotonin, cholecystokinin, and somatostatin are hormones or paracrines that are released directly into the lamina propria. Which of the following cell types synthesize and secrete these products?
a) parietal cells
b) enteroendocrine cells
c) mucous neck cells
d) zymogenic cells
Answer:
The correct answer is option b, that is, enteroendocrine cells.
Explanation:
The specialized cells of the pancreas and the gastrointestinal tract exhibiting endocrine function are termed as enteroendocrine cells. These cells generate gastrointestinal peptides or hormones in response to a distinct kind of stimuli and discharge them into the bloodstream for the systemic effect. These are the most varied endocrine cells found within the body.
The intestinal enteroendocrine cells produce somatostatin, cholecystokinin, motilin, enteroglucagon, and neurotensin hormones. The G cells present within the intestine produce gastrin. In the gastric glands, the gastric enteroendocrine cells are present, which produce histamine, and others like cholecystokinin, alpha and gamma-endorphin, somatostatin, and others.
In the islets of Langerhans, the pancreatic enteroendocrine cells are present, which produce hormones like ghrelin, amylin, somatostatin, and pancreatic polypeptide.
While eating you should not laugh ar talk you may have heard this statement from your elders . Do you agree with this statement ? Give reasons for your answer
Answer:
One might believe that this statement has some truth to it. It is considered bad manners to talk while you are chewing your food. Let alone laughing (also a choking hazard). However it shouldn't be taken too seriously. Conversation on the dinner table can be fun while enjoying a meal with many other people. However conversation is done before taking a bite as talking with your mouth full is disrespectful to others and shows bad manners.
Explanation:
Geologists might study everything except for a. the moon. b. fossils. c. minerals. d. hurricanes.
Geologists are trained professionals that might study everything except for the moon (Option a).
Who are Geologists?Geologists are professionals who study the features of rocks and fossils that formed during natural processes.
Geologists also study the periods of time in which these fossils can have appeared on the Earth.
In conclusion, geologists are trained professionals that might study everything except for the moon (Option a).
Learn more about Geologists here:
https://brainly.com/question/26048596
#SPJ1
Some individuals can be heterozygous for a particular mutation.This means that one of their chromosomes is normal and the other is mutated in some way. Approximately ___ of the gametes produced by an individual heterozygous for a deletion will be non viable.
Answer:
1/2 (50%)
Explanation:
During meiosis, homologous pairs of chromosomes are separated in order to form haploid cells, and this separation or assortment is known to be a random process. In consequence, the chromosome carrying the mutation will have a 1/2 (50%) chance of being inherited in the gamete that, after fertilization, produces a non-viable organism. In consequence, the non-mutated chromosome also will have a 1/2 chance of occurring in the offspring
Nancy Scheper-Hughes and Margaret Lock observed students at a teaching hospital trying to diagnose a woman's debilitating headaches. Students were impatient with the woman's description of her life circumstances, including an abusive husband and an ailing mother-in-law, but her description might BEST be termed as which of the following?
a. an illness narrative
b. a biomedical diagnosis
c. the human microbiome
d. alternative medicine
Answer:
The answer is option A.
Explanation:
An illness narrative is defined as "patients’ stories about their experiences of illness" on Oxford Medicine. According to the information given in the question, she is telling her experience in an autobiographical fashion with the environmental details, description and other things that may affect her situation, so her description can be best categorized as an illness narrative. The answer is option A.
I hope this answer helps.
A typical eukaryotic nucleus has to exchange a great deal of protein and nucleic acid material with the surrounding cytosol of the cell. Which choice correctly describes a feature of most nuclei that helps promote this exchange
Answer: A typical Eukaryote has an organized nucleus as well as an organized cell organelles.
The nucleus is enclosed in a nuclear envelope and the whole cell organelles are further enclosed in a plasma membrane (cell membrane).
From the question,the choice that correctly describe the feature of most nuclei that helps to promote the exchange of protein and other nucleic acids between the nucleus and the surrounding environment is the presence of nuclear pores which allows for selective movement of materials/items in and out of the nuclear space in a regulated manner.
As células são os componentes fundamentais de todos os seres vivos, não sendo encontradas apenas nos vírus. Algumas pessoas costumam dizer que as células são formadas por membrana plasmática, citoplasma e núcleo. Entretanto, nem todas as células possuem núcleo organizado, recebendo o nome de:
Answer:
Entretanto, nem todas as células possuem núcleo organizado, recebendo o nome de: células eucarióticas
Explanation:
As células eucarióticas são caracterizadas por possuir um núcleo definido, localizado no citoplasma. A diferença que tem com as células procarióticas é que o núcleo nelas está em uma região do citoplasma chamada nucleoide.
Além disso, as células eucarióticas têm um nível mais alto de complexidade em relação à sua informação genética, podendo realizar dois processos para replicar seu DNA: mitose e meiose
What did Chargaff discover while studying bases in the DNA of organisms?
Answer: The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
Explanation:
Confirm if all of these are correct for 10 points + brainliest. If they are incorrect, please correct it.
Answer:
Correct
I am not sure.
Explanation:
Hope it helps you...
During an intramuscular injection procedure, the medication label should be checked:
Answer:
The medication label should be checked by comparing it with the MAR (Medication Administration Records or therapeutic documentation care plan TDCP).That is the label printed on the medication should be compare with the Medication Administrations records
Explanation:
Ideally this should be done three times, when it is removed from the medication cart,and before and after it was removed form the medication cart.
Besides,the date of expiration should be checked,and the regulations concerning administrations of multi-does vial should be taken into considerations.
The medications mode of storage should be taken into confederation,proper storage must be ensured.
Generally the application of medication through injection into the muscles for faster absorption into the blood streams for fast distribution is called IM. This is aided by the rich blood supply to the muscles.Therefore it is a faster mode of blood application than the subcutaneous routes.
Which type of wind is pictured?
A. Sea breeze
O B. Global wind
O C. Prevailing wind
O D. Land breeze
Answer:
Sea Breeze
Explanation:
The hot air from land is going and is is becoming cool air from the ocean
Answer:
A Sea Breeze
Explanation:
8. What type of chemical bond forms between positive and negative ions?
metallic
jonic
covalent
Answer:
and: option B) Ionic bond
A forensic scientist is trying to find out the number of adenine bases in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine? The number of adenine bases will be equal to the number of guanine bases. The number of adenine bases will be equal to the total of all the other bases. The number of adenine bases will be equal to the number of thymine bases. The number of adenine bases will be half of the number of cytosine bases.
Answer:
The correct option is;
The number of adenine bases will be equal to the number of thymine bases
Explanation:
The four chemical bases that make up the DNA code are adenine (A), guanine (G), thymine (T), and cytosine (C) which are arranged based on a specif organism such that they represent the information regarding the building of the organism
The chemical bases of the DNA are found in pairs consisting of two chemical bases which are then known as base pairs. The possible base pairs are;
Adenine (A) pairing with thymine (T)
Cytosine (C) pairing with Guanine (G)
Therefore, the forensic scientist should expect to find that the number of adenine bases will be equal to the number of thymine bases.
Since the scientist was trying to find out the number of adenine bases in the DNA sample, assumption that the number of adenine would be equal to the number thymine would help.
According to the base-pairing rule of Chargaff, adenine always pairs with thymine while guanine always pairs with cytosine.
Going by this rule, we can say that the number of adenine must be equal to the number of thymine while the number of guanine must be equal to the number of cytosine in any DNA.
More on DNA base pairing can be found here: https://brainly.com/question/19670411
What could happen if the cell cycle for the cells in your pinky finger stopped functioning properly? (Check all that apply.)
Answer:
Hello, you did not enter the answer options, but I can help you by explaining what would happen in this case.
if the cell cycle of the cells in your little finger stops working properly, two things could happen. First, if these cells were unable to start and complete the cell cycle, your finger would be unable to heal cuts and bruises that could happen to it, on the other hand, if these cells were unable to end the cell cycle, your finger would develop cancer .
Explanation:
The cell cycle allows the cells of your circus, in this case, of your little finger, to multiply and create exactly the same cells. This process is very important to not only make your finger grow, but also to be able to heal cuts and bruises, regenerating the tissues and skin of your finger.
Unfortunately, over time, or as a result of some factors, cells may have defects in the cell cycle. In short, if the cells are unable to start and complete the cell cycle, your finger will be unable to create new cells and regenerate tissues and skins if your finger is cut or injured. In addition, the cells may not be able to finish the cell cycle and multiply in an exaggerated and unregulated way, generating a cancer in the finger.
Question 6: What is the average number of staghorn corals within this time frame?
Answer:
14 percent
Explanation:
Answer:
14 %
Explanation:
Which of the following is not a method of cell signaling?
A. Short range message molecules
B. Direct contact
C. Hormones
D. Enzymes
Answer:
C: Hormones
Explanation:
hormones do not "signal" other cells. I hope this helps :)
The correct answer is option C. Hormones.
What is the simple definition of hormones?Hormones are chemicals that act like messenger substances in the body. After being made in one part of the body, they move to other parts of the body, where they help control how cells and organs work. For example, insulin is a hormone made by the beta cells of the pancreas.
In endocrine signaling, signaling molecules (hormones) are secreted by specialized endocrine cells and transported through the circulatory system to affect target cells in remote parts of the body.
Hormones are so many essential parts of your body's system that they regulate much of what your body does. Hormones regulate growth, libido, sexual development, reproduction, sexual function, metabolism, and thirst, among other things. They simply tell the body what to do to keep it running smoothly.
Learn more about hormones here: https://brainly.com/question/8162998
#SPJ2
Perhaps you and/or your significant other is a carrier of a harmful recessive trait, such as cystic fibrosis. What would you do when considering having children? Would you hope for the best and ignore the situation, or would you see a genetic counselor or what?
Answer:
At birth the baby would indicate the FEIM laboratory examination or genetic analysis prior to delivery.
Explanation:
The FEIM laboratory examination is carried out by extracting a portion of blood from the newborn child, and is necessary for the accurate diagnosis of diseases such as cystic fibrosis and others such as HIV, etc.
Proteins play key roles in olfaction. One kind of protein, called ___________, attaches itself to hydrophobic odorant molecules so that they may dissolve in watery mucous. A second class of proteins, to which odorant molecules become bound and initiate transduction, are coded by the largest family of genes in mammals and are called ___________ . Group of answer choices
Answer:
The correct answer is "Odorant-binding proteins (OBPs); Olfactory receptors (ORs)".
Explanation:
Odorant-binding proteins (OBPs) are low-molecular soluble molecules that are secreted in high amounts in the nasal mucus layer. The precise biological activity of OBPs remains unclear, however, its solubility and ability to attach to hydrophobic odorant molecules suggest that they acts as carriers. A second class of proteins called olfactory receptors (ORs), act at the genetic level by initiating transduction once odorant molecules attach to them. ORs are coded by the largest family of genes, which include more than 100 genes and pseudogenes that represent around 3% of the genome.
which of these is the most ethical reason for using a simulation rather than an experiment with live animals
The Grey Cat.
Each day you take a walk at a different time following the same route. Along your path there is a bus stop with a bench located at the bottom of a hill. Upon this bench sits a grey cat. Each day, as you pass this grey cat, you say “hello cat”. You’ve recognized that each day, as you do this, a bus consistently comes over the hill. The consistency of this events sparks your interest, it seems to go beyond the possibility of coincidence. In order to satiate your curiousity you have decided to design an experiment to investigate the anomoly.
Working with just the information provided, create a GOOD Hypothesis about the above scenario. Generate an experiment to test your hypothesis, and write an experimental design. Your experimental design writeup must clearly define all essential aspects of the experiment.
Note: Avoid suppositions at all cost! Work with only the information provided. This is science.
Hypothesis: There is a synchrony between the time the bus passes over the hill, the time the cat is positioned on the bench and the time I talk to the cat.
An experiment will be established to prove or deny this hypothesis. This experiment will try to answer if there is a synchrony between the bus, the cat and me.
First, I will write down the time I usually leave the house for the bus stop and then I will look for a schedule of the buses in my city, to evaluate the times when each one passes above the hill to which I refer.
It is necessary that I clock the time spent between my home and the bus stop to which I am going, so that I can relate to the bus schedule.
I must also install a camera system at the bus stop to observe the times the cat arrives at that location.
Every day, for a month, I will write down the time I left home, the time I arrived at the bus stop, the time the cat arrived at the bus stop and the time the bus passed. At the end of this period, I will do average calculations to find out how many times our schedules have been synchronized. Through these data I will conclude whether the hypothesis is false or true.