segregation ratio distortion

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The distortion of the 1:1 segregation ratio produced by a heterozygote. Such distortions may arise because of abnormalities of meiosis that result in an Aa individual's producing unequal numbers of A- and a-bearing gametes, or it may arise from A- and a-bearing gametes, being unequally effective in producing zygotes.

Subjects: Genetics and Genomics.

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