Question

A research team studied a large lizard population in the Sonoran Desert of Arizona. In these lizards, gene A is one gene that affects the color pattern on the dorsal surface of the lizard’s body. In 2010, the research team sampled a large number of lizards and determined the genotypes of the lizards for the A gene. They found the following genotype frequencies: A1A1 = 0.17, A1A2 = 0.15 A2A2 = 0.68. What is the frequency of the A1 allele? 0.49 0.5 0.34 0.17 0.245 0.755 0.15

Answer 1

Answer:

Option A, $0.49$

Explanation:

As per Hardy Weinberg equation -

$p^2$ is the frequency of occurrence of genotype $A_1A_1$

The frequency of allele $A_1$ will be equal to square root of frequency of $\sqrt{p_2}$

Substituting the given value in above equation, we get -

Frequency of allele $A_1= \sqrt{p^2}$

Frequency of allele $A_1 = \sqrt{0.17}$

Frequency of allele $A_1= 0.412$

So the nearest option is option $0.49$, i.e option A