Natural Selection and Genetic Drift
evolution refers to the change in the characteristics of a species over several generations and relies on the process of natural selection.
there are four types of mechanism of evolution:
natural selectiongenetic driftgene flowmutationthe mechanism of evolution could involved in the evolution of wolves and dogs are:
natural selection and genetic drift
natural selection favored wolves that were bold and friendly. bold and aggressive wolves would be killed and hence unable to breed. this allowed bold and friendly dogs to breed, which was key to eventual evolution into dogs.
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PLZ, PLZ, PLZ HELP! NEED NOW!
Answer:
the plant is gaining minerals, sugars, and water
Explanation:
(a) Describe why monitoring the growth rate of the E. Coli-M bacteria is a useful indicator of the effect of the glycolytic enzyme mutation on the bacteria.
Answer:
The monitoring the growth rate of E.Coli bacteria is a useful indicator of the effect of glycotic enzyme mutation on the bacteria as the flow of intracellular metabolic components depends on the availability of carbon. Hence the change in carbon source can change the glyclyotic enzyme mutation up or down.
Explanation:
Continuous culture is a method that can be used by the researchers for determining whether mutation affects the growth rate of E.Colin-M bacteria
If the growth medium contains higher concentration of acetate,then the growth of the bacteria will be inhibited without inhibiting its central metabolism.
When E.Coli grows ,it secrets acetate. This mechanism is called overflow mechanism. Regulatory interactions mediated by acetyl-phosphate plays a major role in inhibiting growth by acetate. The uncoupling effect of organic acids or perturbation of the anion composition of the cell is a major reason for growth inhibition.
Which statements describe the synapse? Select all that apply
It carries information through electrical impulses to the cell body
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body,
It is the gap between neurons
It ensures that information travels in multiple directions
Answer:
It ensures that information travels in one direction only.
It is the gap between neurons.
Explanation:
It's correct
Answer:
Explanation:
It ensures that information travels in one direction only.
It is the gap between neurons.
What emits infrared radiation?
Question 1 options:
humans
non-living objects
anything that contains atoms
Answer:
same as other guy
Explanation:
So you can mark the other person :)
Anything that contains atoms emits infrared radiation. Therefore, option (D) is correct.
What is Infrared radiation?All objects, living or non-living, emit some amount of infrared radiation, which is a type of electromagnetic radiation with wavelengths longer than those of visible light. The amount and wavelength of the infrared radiation emitted by an object depends on its temperature, with hotter objects emitting more and shorter-wavelength infrared radiation.
This is the principle behind the use of infrared cameras and thermal imaging technology to detect and measure heat in a variety of applications, including night vision, medical imaging, and industrial inspections.
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Why are pollutants more harmful to tertiary (top) consumers as opposed to producers?
Answer:
because making that substance is does not generate that much pollutants, but using that substance generates more pollution.Explanation:
❤
I am a single-celled, prokaryotic organism that lives in the large intestines of mammals. I reproduce asexually by binary fission and can reproduce very quickly.
Answer: Kingdom:Eubacteria
organism name: kelp
Explanation: its kelp in the kingdom classification bacteria
Answer:
Escherichia coli.
Explanation:
Escherichia coli (E. coli) is a gram negative, rod shaped and facultative anaerobic bacterium that lives in large intestines of mammals. It is unicellular or single celled and prokaryotic organism. It reproduces asexually by binary fission.
It does not have nuclues or membrane bound organelbecause it is prokaryotic.
Therefore,
Escherichia coli lives inside large intestines of mammals.
Describe two types of living things that biologists could study. Think about types of living things that are not in the ocean — what categories of living things are on land?
Answer:
Following are the two types of living things that biologists could study:
1) Animals
2) Plants
Explanation:
As we know plants and animals are the most important organisms. Animals has further categories of living things are on land:
1) Birds
2) Mammals
3) Reptiles
4) Amphibians
Fishes are not included because they are in water but not on land.
Choose all the answers that apply. The hypothalamus _______
Answer:
A. The anterior pituitary is also known as the adenohypophysis.
C. The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system.
D. Oxytocin is secreted by the anterior pituitary.
Explanation:
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What information would you like to know / obtain when interviewing someone that helps the Environment
Answer:
- what they believe is the most important thing to focus on when it comes to saving the environment
- what steps they are taking to improve the environment
- their credentials, are they qualified, whats their background experience
- what interested them in helping the environment in the first place
-hope these ideas help :)
Explanation:
Answer: 1)Why did you decide to go into the field of sustainability?
2)How do you stay ahead of the latest developments in the environment sector?
3)Tell me about a recent challenge you faced while working on a sustainability project. How did you overcome it?
4)How would you describe your work process?
5)Tell me what interests you most about this specific role.
*10 points* biology ill give you brainliest if right
Answer: B.
Explanation:
Arrows point to penguin, fish, krill, and other birds.
12
Suppose a fire burns through the beetles habitat, leaving the trees, soil, and some rocks
charred black for several years. Most of the beetles and their predators survive the fire and
continue to live in the habitat.
a. Identify which beetle phenotype or phenotypes will most likely be favored in the habitat
after the fire. Explain your answer.
b. Identify the type of natural selection (directional, stabilizing, or disruptive) that will most
likely act on the beetle population.
The type of natural selection you identified in part (b) will change the phenotype distribution
in the beetle population.
c. Using your knowledge of natural selection, explain how the change in phenotype
distribution will occur.
Answer:
The answer is B
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Explanation:
B.Identify the type of natural selection (directional, stabilizing, or disruptive) that will most likely act on the beetle population. The type of natural selection you identified in part (b) will change the phenotype distribution.
What do you mean by the term natural selection?Natural selection is the process in which the species are adapted to their environment.
Natural selection leads to evolution when the people having certain characteristics posses the greater chance of survival than the others that are not adapted to the changes, these adapted characteristics are passed to the next generations.
Thus, this could be the answer.
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3.2 State whether each of the phrases applies to A only, B only,
both A and B or none. Write down A only, B only, both A and B
or 'none' next to the question number.
For example, 3.2.6 None
3.2.1 Mitosis
A cloning
B chromosomes
3.2.2 Chromosome
A chromatid
B spindle fibre
3.2.3 Phases in the cell cycle
A interphase
B mitosis
3.2.4 Tumour
A benign
B malignant
3.2.5 Bone cancer
A carcinoma
B leukaemia
Answer:
3.2.1 Mitosis - Both A and B
3.2.2 Chromosome - Both A and B
3.2.3 Phases in the cell cycle - Both A and B
3.2.4 Tumor - Both A and B
3.2.5 Bone cancer - B only
Explanation:
1. Mitosis is a process of cell replication , in which one cell divides into two identical daughter cells having the same number of chromosomes. In mitosis, the two new cells are genetically identical. Copies of the chromosome (containing the DNA) are made and distributed equally to each cell. Some organisms such as bacteria reproduce entirely by mitosis.
In cloning, an organism that is genetically identical to another organism is made from that original organism. Cloning can occur naturally or may be done by man artificially. In nature, many organisms produce clones through asexual reproduction for example bacteria produces clones by mitotic binary fission.
Therefore, the phrase mitosis, applies to both A and B.
2. Chromosomes are structures found within the nucleus of cells that contain the genetic material of the organism. The chromosomes are composed two identical structures called chromatids thar are joined together to at a constricted point known as centromere.
During cell division, long fibres extend from the centroiles at the ends of the cell to the centromere of the nucleus in order to pull them apart. These long fibres are known as spindle fibres.
Therefore, the phrase, Chromosome, applies to both A and B
3. The phases in the cell cycle are divided into two major stages : interphase and Mitosis. In interphase, the cell grows and makes a copy of its DNA.
In mitotis, the cell DNA divides into two sets, the cytoplasm divides, forming two new cells.
Thus, phases of cell cycle applies to both A and B
4. Tumours are abnormal growths occurring in any part of the body which may be benign or malignant.
Benign tumours are harmless growth which do not have spread out to other tissues to form various cancers.
Malignant tumors spread out from their point of growth to other tissues leading to cancer in these other tissues and organs.
Therefore, tumors applies to both benign and malignant.
5. Bone cancer refers to abnormal growth of bone cells.
Carcinomas are cancers of the skin and tissue lining of organs.
Leukaemia are cancers affecting the bone marrow, whereby the bone marrow makes abnormal white blood cells, red blood cells and platelets.
Thus, bone cancer only applies to B.
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Two atoms have the same number of protons but different numbers of neutrons. These atoms are:
A. electrons
B. isotopes
C. molecules
D. radiation
tysm!
Answer:
isotopes
Explanation:
If two atoms have different numbers of protons, they are different elements. However, if two atoms have the same number of protons, but different numbers of neutrons we refer to them as isotopes. Two terms we use to identify nuclides (isotopes) are atomic number and mass number.
What do you think would happen to the population of rabbits, if the population of foxes decreased?
Answer:
the population of rabbits might increase
Explanation:
With less predators to eat them, the rabbit population will likely go up if the fox population decreases; assuming there are favorable factors such as plenty of food and habitat for the rabbits. At some point, there is a maximum limit to the number of rabbits that a certain location can hold. Once this limit is reached, (some of) the rabbits will migrate elsewhere or unfortunately die off.
As the rabbit population increases, the fox population may rebound and start increasing again. This is due to more food being available to the smaller amount of foxes, and there is less competition for food. So the rebounding fox population will likely bring down the rabbit population to a point where food will get more scarce for the foxes. This cycle repeats itself where one population increases while the other decreases, and vice versa. They are very strongly linked together. It's also possible that both will increase together if environmental factors are favorable, but they could easily decrease together if a habitat is being destroyed for instance. It will depend on the circumstance.
Can u plz tell me five facts about the primary succession
Answer:
Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier.
Explanation:
What role did you play in the production of the protein product?
Explanation:
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.These proteins provide structure and support for cells. On a larger scale, they also allow the body to move.
A new discovery is peer-reviewed by other scientists. The scientists asked many
questions about how the experiment was conducted. They were also curious about
whether the results were influenced by others. What were the scientists trying to
determine from their review?
Answer:
When scientists conduct an experiment and analyze the results, the next step is to write up a report that describes the experiment and the results and submit it for publication in a scientific or medical journal that is “peer reviewed.”
Which statement can be best supported by the fossil record
Answer:
Many organisms that lived in the past are now extinct .
Explanation:
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Please answer me what’s the answer for this ?
Answer: Gene flow my man
Explanation:
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Answer:
I know proteins are made in Ribosomes so I would say the Rough Enplopasmic whatchacall it
Explanation:
uhhh i took biology, sorry thats the only one i an help on its been a while
How is the ocean biome and the tundra biome different with climate change?
⦁ Arrange these statements in the right order to describe process of inhalation.
____ Air is drawn into the lungs
____ Air pressure in the chest cavity decreases
____ Lungs expand
____ The diaphragm contracts and flattens
____ The muscles between the ribs contract to move the ribs up and out
Answer:
air is drawn into the lungs
lungs expand
the muscles between the ribs contract to move the ribs up and down
air pressure in the chest cavity decreases
the diaphragm contracts and flattens
Inhalation has been part of respiration. It includes drawing air into the lungs that expand the lung cavity by pulling the ribs leading to contracting the diaphragm followed by a decrease in lung pressure. Thus the correct order is 1, 3, 5, 4, and 2.
What is inhalation?Inhalation is the respiratory process to inhale oxygen inside the respiratory system for the cellular and respiratory processes. At first, the air is drawn into the lungs followed by expansion of the lungs.
This causes the ribs muscles to move up and down to accumulate the volume. This movement causes the diaphragm to flatten and contract which allows the oxygen to take place in the lungs that decreasing the air pressure in the cavity.
Therefore, the air is drawn inside the lungs in inhalation.
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How is it possible for a mutation not to produce any visible effect in an
organism?
Answer:
Some mutations don't have any noticeable effect on the phenotype of an organism. This can happen in many situations: perhaps the mutation occurs in a stretch of DNA with no function, or perhaps the mutation occurs in a protein-coding region, but ends up not affecting the amino acid sequence of the protein.
Why the Chimpanzee's diploid number is 24 instead of 48.
I am not sure if the following table supposes me to write 2 (N) on here...
Thank you very much
Answer:
It has 24 pairs and 48 number of chromosomes.
Explanation:
The Chimpanzee's diploid number of chromosome is 24 pairs instead of 48 because of the resemblance with the human cell that have 23 pairs of chromosome. The Chimpanzee has 24 pairs of chromosome or another words we can say that chimpanzee has 48 number of chromosomes not pairs. Humans have 23 pairs whereas apes have 24 pairs of chromosome. The theory suggested about this close number of chromosomes is that at some point two ape chromosomes fused to make a single human one.
What are the end products of transcription and translation?
A) Transcription: amino acid, Translation: protein
B) Transcription: RNA, Translation: protein
C) Transcription: protein, Translation: RNA
Answer:
B
Explanation:
Invasive species are harmful not because of what they are, but because of
Answer:
What they do
Explanation: People put goldfish in lakes and creeks and ponds they invade the area and eat everything there and the animals that are there they take all the recorses that the other speices need
Edwin Hubble was an American astronomer who played a crucial role in collecting evidence to support the theory that the universe is constantly expanding outward and is not simply static. He used light from distance stars to calculate their movement.
Meanwhile, around this same period of time, a Russian physicist by the name of Mikhail Lomonosov worked tirelessly in his lab studying different chemical reactions. Lomonosov would later help in developing the Law of Mass Conservation which states that during a chemical reaction the total mass of the substances before the reaction is equal to the total mass after the chemical reaction.
How are the methods used in the pursuit of a scientific explanation different between Edwin Hubble and Mikhail Lomonosov?
A) Edwin Hubble carefully identified and manipulated variables to answer questions; Mikhail Lomonosov made observations about the natural world.
B) Edwin Hubble made observations about what he studied; Mikhail Lomonosov did not
C) Edwin Hubble and Mikhail Lomonosov both used scientific equipment and collected evidence
D) Edwin Hubble made observations about the natural world; Mikhail Lomonosov carefully identified and manipulated variables to answer questions.
Answer:
C
Explanation:
These type of questions leave a great deal to be desired. There is no mention of which way Hubble used and manipulated data. He studied the variations in light to determine his conclusions.
Nor is there any mention of what Lomonosov did to come to the conclusion that conservation of mass is a constant.
We don't know what was done to get the results. Hubble was studying the universe; the conclusions made by Lomonosov depended on lab equipment that was very delicate (I'm assuming). I doubt he manipulated variables. He measured what he got.
I think the answer is C, but the question has so many assumptions that it is hard to know what answer to pick.
pasteurization is not required for which type of egg or egg product ?
6. Which marrow was denser (had more mass in the given volume)? What impact would that have on the overall density of the bone?
Answer:
The beef bone marrow was denser than the chicken bone because it had more mass in the given volume. Since the chicken must fly, it cannot have its bones weighing it down on the land. However, cows must find grass on land and travel long distances. This would increase the overall density of the bone.
Explanation:
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can y’all help me this one??
Question and answer are in there
Answer:
cold coastal area
Explanation:
since the hurricanes occur this often it must be in coastal area
Answer:
I believe it's warm coasted area, not entirely sure tho
Explanation: