5000 Thailand natives were tested for their MN blood grouping. This allele has incomplete dominance and analysis indicated a phenotypic distribution of 600M, 4000MN, 400N. What is the frequency of the N allele?

0.28

Explanation:

This allele has incomplete dominance and analysis indicated a phenotypic distribution of 600M, 4000MN, 400N.

Using p+q = 1

Where q is the frequency of the N allele-

400N/5000 = 0.08 is the genotypic frequency out of 5000 in total - q²

Thus the frequency of the allele N is √q² = √0.08 = 0.28

it takes hundreds of years to become stable.

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