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omeli [17]
3 years ago
14

In evolutionary history, the first animals to successfully invade land from the sea were ___________________, an animal with a h

ard outer skeleton and jointed limbs.
Biology
1 answer:
gladu [14]3 years ago
7 0
Arthropods were the first animals to successfully invade land from the sea
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Suppose a population is carrying a condition controlled by two alleles: R (dominant) and r (recessive). Only homozygous individu
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<span><u>The answer is A. 72.25 percent.</u>

The Hardy-Weinberg principle can be used:</span>

<em>p² + 2pq + q² = 1</em> and <em>p + q = 1</em>

where <em>p</em> and <em>q</em> are the frequencies of the alleles, and <em>p²</em>, <em>q²</em> and <em>2pq </em>are the frequencies of the genotypes.

<span>The <em>r</em> allele (<em>q</em>) is found in 15% of the population:
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To calculate the <em>R</em> allele frequency (<em>p</em>), the formula p + q = 1 is used:
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Knowing the frequency of the <em>R</em> allele (<em>p</em>), it is easy to determine the frequency of the RR genotype (p²):
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