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svetoff [14.1K]
4 years ago
7

If speciation occurred solely because of changes in chromosome counts between the original parents (who were 2n) and the offspri

ng (who were 4n), would this be an example of speciation by natural selection?
Biology
1 answer:
Ket [755]4 years ago
8 0

Answer:

Yes...This is an example of speciation by natural selection

Explanation:

As we know that natural selection always promote those evolutionary changes that are necessary. Changes that happen in chromosome number always promote with a specie that is closely related to the parent specie and produce fertile off-springs. These new generations are most adaptable and can survive in the environment more efficiently than the previous ones.

Additionally, other than natural selection, speciation can also happen as a result of random mutations, genetic drift and by means of artificial selection as well. But the natural likelihood of all these is probably low as compared to that of natural selection.

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What does biologist study?
Elza [17]

Answer:

<h3>Biologists study humans, plants, animals, and the environments in which they live. They may conduct their studies--human medical research, plant research, animal research, environmental system research--at the cellular level or the ecosystem level or anywhere in between.</h3>
5 0
3 years ago
A diabetic, who does not utilize insulin properly, will metabolize fats instead of glucose. A condition called diabetic ketoacid
Readme [11.4K]

Answer:The correct answer to the question is option D

THE PH IS BELOW NORMAL (ACIDIC) BECAUSE THE BUFFERING CAPACITY WAS EXCEEDED.

Explanation: When insulin is being utilized well by a diabetic,glucose is metabolized because the insulin administered helps the body cells to pick up glucose from the food we eat and convert it to energy for the body to work with and function well.But when insulin is not being utilized properly by a diabetic,fats are metabolized instead of glucose that is to say that,the cells in the body are not sensitive to the glucose supplied by the food we eat which makes the body to be hypoglycemic (low blood glucose level),the body inorder to raise the blood glucose level starts breaking down stored fats in the body at a rate that is higher than normal inorder to provide energy, the liver then processes the broken down fats into a fuel that is known as ketones, these ketones are released into the blood causing the blood to be acidic,the buffering property of blood on a normal note is suppose to resist the changes in the PH of the blood,but when the buffering capacity is exceeded,there won't be any resistance to the change in the blood PH which will inturn lower the blood PH level making it acidic.

This is exactly what happened to the diabetic being described in the question.

6 0
3 years ago
A light bulb converts electrical energy to
professor190 [17]

Answer: electromagnetic (light) energy and thermal energy

Explanation:

8 0
3 years ago
2.
Leya [2.2K]
All plants and animals are made of cells
6 0
3 years ago
Imagine that smurfs live in widely separated groups and rarely interbreed, so geneticists know very little about them. On one oc
Keith_Richards [23]

Hello! Your answer is A, blue is dominant to white.

A dominant gene means that it is always expressed if present, no matter what other genes there are. For example, if there is a dominant blue gene, and a recessive red gene, blue will be expressed.

In this case, we see that all three children are blue. This shows that blue is most likely dominant, and white is recessive.

Let's approach the other case, that white is dominant to blue. If white is dominant, then the blue smurf must have two blue recessive traits, and the white smurf would either have two white dominant traits, or one white and one blue trait. The only possible way the children can have a blue color is if the white smurf is heterozygous (meaning it has two different genes, in this case one blue and one white), and passes down the recessive gene three times. As you can see, this is very unlikely.

If white and blue are codominant, then the children would have a mixture of the two genes. (Most likely). This is not the case.

Therefore, your answer is A.

Hope this helps!

5 0
4 years ago
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