Regarding natural selection, _____ is the driving force behind a population's change in characteristics.

1 answer:

4 0

<span>Regarding natural selection, heritable variability is the driving force behind a population's change in characteristics. There must be variation in traits, and this variation must be heritable. The variability in characteristics must result in a variation in ability to survive. Those with certain traits must be favored for or favored against for natural selection to work. They can be adaptations that increase or maintain one's ability to survive.</span>

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Which of these best defines a species?

sergij07 [2.7K]

Answer:

The answer is B

Explanation:

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kondor19780726 [428]

Answer:

500 amino acids

500 codons

Yes

Explanation:

A codon is a set of 3 base pairs. Each codon codes for a specific amino acid. So the ratio between codon and amino acid is 1:1 and the ratio between base pairs and codon is 3:1.

If you have 1,500 base pairs then we can mathematically solve the number of codons:

$\dfrac{1,500}{x} = \dfrac{3}{1}\\\\(1,500)(1) = (3)(x)\\\\\dfrac{1,500}{3} = x\\\\ 500=x$