Question

In a population of 1000 snails, tests of snail color genes show that 160 snails are AA, 480 are Aa and 360 are aa. What is the frequency of the A allele in this population? .04 .1 .6 .4 .001

Answer 1

Option C.

Explanation:

Total population = 1000 snails

AA = 160 snails

Aa = 480 snails

aa = 360 snails

Frequency of each type.

`AA=(160)/(1000)=0.16`

`Aa=(480)/(1000)=0.48`

`aa=(360)/(1000)=0.36`

Now, we get

`A^2=0.16\Rightarrow A=√(0.16)=0.4`

he frequency of the A allele in this population is 0.4.

Therefore, the correct option is C.