Question

In chickens, having feathers on legs is dominant to having featherless legs. In a population of 200 chickens, 128 have featherless legs. How many chickens are heterozygous for the “feathered leg” allele? Assume the population is in Hardy-Weinberg equilibrium. In chickens, having feathers on legs is dominant to having featherless legs. In a population of 200 chickens, 128 have featherless legs. How many chickens are heterozygous for the “feathered leg” allele? Assume the population is in Hardy-Weinberg equilibrium. 32 36 64 72 Not enough information is provided.

Answer 1

Chickens have legs

Step-by-step explanation:

they just do

Answer 2

Option A,
`32`%

Step-by-step explanation:

Number of chickens having featherless legs
`= 128`

Number of chickens having feathered legs
`= 200-128`
`= 72`

Frequency of chickens having featherless legs

`= q^(2)`

`q^(2) = (128)/(200)\\q^(2) = 0.64`

Frequency of alleles for featherless legs

`= \sqrt{q^(2)} \\= √(0.64) \\= 0.8`

As per first equation of Hardy Weinberg-

`p+q=1`

Substituting the given values we get -

`p = 1-0.8\\p=0.2`

As per second equation of Hardy Weinberg-

`p^(2) + q^(2) + 2pq=1`

Substituting the given values we get -

`0.64+0.04+2pq=1\\2pq=1-(0.64+0.04)\\2pq= 0.32\\2pq=32`%