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3 years ago

12

Explain how a mutation in the DNA sequence of a gene can cause that person to become sick.

1 answer:

Degger [83]3 years ago

3 0

Answer:

DNA mutations cause cancer or an inability for proper function of the immune system.

Explanation:

DNA is our blueprint, so if something is wrong on the blueprint, then our body will "collapse" like a building (well not always). Let's say, the gene for immune system function is mutated and comes out wrong. That person might not be able to make white blood cells which fight off sickness. Other mutations can also cause cancer, which is a really bad form of sickness.

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In gorillas, the ability to roll the tongue is under the control of 1 gene. The R allele, which confers tongue-rolling ability,

aalyn [17]

Answer:

0.4550

Explanation:

In this example, R allele is dominant, so individuals RR and Rr can roll their tongues. If in a population of 1000 gorillas, there are 575 gorillas who can roll their tongues, they will be RR and Rr.

In this case, there is Hardy Weinberg Equilibrium, so the following will be true:

$p^{2}+2pq+q^{2}=1$

Where:

$p^{2}=$ frequency of RR

$2pq=$ frequency of Rr

$q^{2}=$ frequency of rr

The question is what is the frequency of heterozygotes, or, what is the value of 2pq.

We know that RR+Rr is 575 individuals in a population of 1000, or 0.575.

In other words:

$p^{2}+2pq=0.575$

So, it is possible to find $q^{2}$ :

$q^{2}= 1-2pq-p^{2} \\q^{2}=1-(0.575)\\q^{2}=0.425$

Now, there are two alleles in the population, so the following will be true:

$p+q=1$

It is possible to find q (the frequency of allele r) and p (the frequency of allele p):

$q=\sqrt{q^{2} }\\ q=\sqrt{0.425} \\q=0.652$

Therefore:

$p=1-q\\p=1-0.652\\p=0.348$

Now, the frequency of heterozygotes or 2pq is:

$2pq=2*0.652*0.348\\2pq=0.45$

7 0

3 years ago

The domain that contains unicellular organisms that live in extreme environments is

Nady [450]

The answer is Archaea

4 0

3 years ago

A border collie breeder raised border collies for herding cattle. She has 50 dogs, and lets them breed randomly. She has noticed

Svetach [21]

Answer:

20?

Explanation:

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3 years ago

What can radiometric dating reveal

Dahasolnce [82]

Radiometric dating reveals the exact (i think its exact) age of a fossil.

3 0

3 years ago

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What temperature and humidity levels are needed up high and near the ground for a thunderstorm to develop?

Artemon [7]

The second answer
Temperatures up high need to be warmer near the surface, surface air needs to be humid

8 0

2 years ago

Read 2 more answers