Question

In a random mating population 5000 individual frequency of dominant organism is 0.51 find out no. of heterozygous and homozygous individual

Answer 1

Hello everyone...

As dominant organisms are called homozygous.

So,

No. of homozygous individual = 2550
No. of heterozygous individual = 2450

Hope this helps you...

Answer 2

The frequencies of different types of genotypes in ideal population are described by the Hardy–Weinberg law: p^2 +2pq+q^2 =1 where p 2 is a frequency of dominant homozygotes, q^2 is a frequency of recessive homozygotes and 2pq is a frequency of heterozygotes. It’s based on simple equation: p + q = 1 where p and q are frequencies of dominant and recessive alleles in population. In order to find percentage of heterozygotes at first find frequencies of alleles in population:

P^2 = 49% = 0.49, so p = 0.7;

q = 1 - p = 1 - 0.7 = 0.3;

Then find frequency of heterozygote as 2pq = 2*0.3*0.7 = 0.42 = 42%

The percentage of heterozygous individuals in population is 42%.