Question

The plain shells is only seen in individuals who are homozygous. There are 136 snails with plain shells 252 snails with striped shells. What is the value of p?

Answer 1

p=.59

Step-by-step explanation:

Using Hardy Weinbeirgh Principle, p can be calculated

p is the frequency of dominant allele in an organism, here plain shells are dominant over striped shells hence dominant allele is homozygous from the question

Dominant homozygous = 136 snails

Recessive allele = 252

Total number of individuals= 136+252

= 388

frequency of individuals with the dominant trait (p^2) = Dominant individual/total individuals

= 130/388

p^2= 0.35

This value 0.35 corresponds to p^2

Since we know that allele is one character of gene

p^2=.35 where underoot x is 0.35

p=
`√(x)`

p=0.59

Hence the value of p=0.59