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SVETLANKA909090 [29]
2 years ago
5

What makes mitochondrial DNA useful as a molecular clock?

Biology
2 answers:
Hoochie [10]2 years ago
7 0

The correct answer is D

As compared to nuclear DNA, the mtDNA (mitochondrial DNA) experiences very less mutations. Due to this slow mutation rates, it does not change much over the time. It makes it a good candidate for studying the evolutionary relationship between the species.

In addition, it is mainly inherited from mother’s cytoplasm which also allows the scientists to trace back the maternal ancestral lineage.

White raven [17]2 years ago
6 0

Answer:

A large portion of the DNA ring is not vital to structure or function, allowing it to accumulate neutral mutations.

Explanation:

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Explain why it is impossible for a man to be a carrier of a sex-linked trait.
hoa [83]

Answer:

Because it contains two different sex chromosomes

Explanation:

Man in its genome contains two sex chromosomes, X and Y, while woman contains two X chromosomes.

In order to be a carrier of a sex-linked trait, a person should have one copy (one allele) of a certain trait. For example, if a female has one X chromosome with mutation (e.g. disease carrying) and one normal X chromosome, she is carrier for the disease. But, on the other hand if a male has one X chromosome with mutation he will develop that disease.

7 0
3 years ago
What percentage of air is carbon dioxide​
Charra [1.4K]

Answer:

The percentage of carbon dioxide in the air is 0.04%

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3 years ago
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Which type of population growth is shown in this graph?
adell [148]

Answer:

A: exponential

Explanation:

I did the test

7 0
2 years ago
Question 8 of 10
jonny [76]

The purpose of control group 2 is to determine if the new drug was a possible method for getting well, i.e., option B.

<h3>What is way of testing medicines?</h3>

In a laboratory, drugs are first subjected to non-human tests. These laboratory tests are performed to determine a level of safety.

The results of these tests are then submitted to the United States Food and Drug Administration (FDA), which determines whether the treatment is safe enough to be studied in human volunteers.

There are various phases involving discovery, clinical trial, review, and safety monitoring.

The purpose of control group 2 is to determine if the new drug was a possible method for getting well

Thus, the correct option is B.

For more details regarding drug testing, visit:

brainly.com/question/11332268

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5 0
2 years ago
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The cholodny-went hypothesis has been proposed to explain how plants bend toward a directional light source. What does this hypo
ololo11 [35]

Answer:

The cholodny-went model was proposed in 1927. This model explains the capability of the shoots to grow in the direction of the sunlight whereas the capability of the roots to grow downwards. The hypothesis suggested that both these directional growth occurred due to the asymmetrical distribution of the plant hormone, auxin. This model has been modified a number of times by other scientists but its general concept is accepted by most of the researchers.

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3 years ago
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