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

Option A,
`0.49`

Step-by-step 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
`√(p_2)`

Substituting the given value in above equation, we get -

Frequency of allele
`A_1= √(p^2)`

Frequency of allele
`A_1 = √(0.17)`

Frequency of allele
`A_1= 0.412`

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