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3 years ago

A flood kills most of the population of ants that live near river water

1 answer:

4 0

This situation is the perfect example of the random process that is called genetic drift. A minor, usually, form of evolution that works best in small <span>populations or in situation as you have described above.

I hope you get this answer right!
Have a great day!:DDDD :)!</span>

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Explain how the ages of the rocks on the ocean floor support the theory of seafloor spreading

Dafna11 [192]

The Drilling sample of the Seafloor spreading theory helped in determining rock ages on the floor of ocean.

Explanation:

The formation of crusts of ocean by the process of volcanic eruptions in the ridges of the middle ocean is the theory of seafloor spreading proposed by Hammond Hess. The movement of tectonic plates continuously forms sea floors through spreading of seafloor. The several evidences in support of this theory has been seen, of which some are – molten material eruptions, magnetic stripes in rocks and rock ages.

The drilling evidence is the final one that was proved by taking samples of rock by drilling in ocean and by bringing them with pipes. The observation of these rocks proved that older rocks were collected from farther ridges and youngers are found in the central ridges.

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3 years ago

Suppose that in unicorns, two autosomal loci interact to determine the type of tail. One locus controls whether a tail is presen

Nina [5.8K]

Explanation:

As you can see in the picture below, this is a dihybrid cross with a twist.

We can accomplish that mutually parentages are heterozygotes for both characters because the genotypes are

9 unicorns with curly tails (shown in green)

3 with straight tails (shown in red)

3 curly tales trait carriers with no tail (shown in dark blue)

1 straight tail trait carriers with no tail ( shown in light blue)

If this was an ordinary case of the dihybrid cross, we would get a 9:3:3:1 phenotype ratio.

However, since the first trait, the presence of the tail, is affecting the other trait, the trait texture, the ratio is altered.

$\frac{1}{4}$ of the offspring (genotypes tt C_ and tt SS) has no tail, therefore we cannot observe the texture of the tail (some of the tailless individuals have Curly alleles -blue squares marked with green, some of them have Straight alleles -blue square marked with red ).

Therefore, the altered ratio is $\frac{1}{2}$ curly tails, $\frac{1}{4}$ straight tales, $\frac{1}{4}$ tailless

6 0

3 years ago

Initiation elongation and termination are the three main steps in:.

Shalnov [3]

Answer:

Transcription

8 0

3 years ago

Which two cell types in placozoans make up the endoderm tissue layer?

Radda [10]

Answer:

It's D.

Explanation:

5 0

3 years ago

Read 2 more answers

What is the role of a spinal cord in a human body

AysviL [449]

Answer:

To transport signals to the rest of the body and to keep the body upright.

Explanation:

To protect the nerves and keep the body upright. This is because if your spine is broken, then you become paralysed therefore it's an extremely important aspect for the body.

6 0

3 years ago