When a population has a gene with two alleles circulating, how many possible genotypes are there?

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03-03-2017
Biology

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When a population has a gene with two alleles circulating, how many possible genotypes are there?

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jprazanth jprazanth · Answer 1 · 2017-03-03T09:42:32+01:00

jprazanth jprazanth

03-03-2017

its so simple. Two alleles means three genotypes.
consider a gene has two alleles A(blue eyes) and a(brown eyes)
possible combinations:
1. AA - Homozygous dominant -Blue eyes.
2. Aa - Heterozygous - Blue eyes.
3. aa - Homozygous recessive - Brown eyes.

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