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icang [17]
3 years ago
12

Why does geographic isolation cause speciation?

Biology
1 answer:
brilliants [131]3 years ago
6 0
It's "It prevents the two populations from interbreeding" I just took the test.
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Now can you predict nucleotide quantities in a hypothetical scenario with more than four different types of nucleotides? An alie
den301095 [7]

Answer:

16% is G

12% is T

12%is A

22% is X

Explanation:

Given that each nucleotide is complimentary to another nucleotide, there cannot be more of one than the other. For example, C bonds to G, so there cannot be more C than G, because there would be nothing for it to bond to.

So if there is approximately 16% of the genome composed of C, that would mean that approximately 16% is composed of G (for it to bond to).

The same logic can be used to determine the amount of nucleotide X is present. If Y binds to X, and approximately 22% is composed of nucleotide Y, then the same percentage can be given to nucleotide X, and say the amount of X is 22%.

Now all of the nucleotides have to add up to 100%, so:

A + T + G + C + X + Y = 100%

A + T + (16%) + (16%) + (22%) + (22%) = 100%

A + T = 24%

Given that A binds to T, they must be equal to each other, hence we can say that the concentration of A, equals the concentration of T.

Therefore, the concentration of A is 12%, and the concentration of T is also 12%.

4 0
3 years ago
If a person has a painful, bleeding injury to the nose, should aspirin be given to help? Why or why not?
sattari [20]

No, you should not give aspirin to a person if the have a painful, bleeding injury to the nose.  Because aspirin thins the blood and cause you to bleed that much more.  

3 0
2 years ago
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Please answer this question,
ludmilkaskok [199]
D.... is the answer potential energy is energy stored in an object from its position.
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2 years ago
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The visual examination of the fundus of the eye with an ophthalmoscope is known as?
den301095 [7]

Answer:

Ophthalmoscopy, also called funduscopy.

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Treatment of dividing cells with a low dose of the antifungal drug benomyl, which destabilizes microtubules, slows down correct
lilavasa [31]

Answer:

The answer is letter A.

Explanation:

A loss-of-function mutant in the gene encoding Mad2.

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