The F_2 dihybrid ratio 9 : 3 : 4 is explained | vedclass

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(B) The $F_2$ dihybrid ratio of $9 : 3 : 4$ is a characteristic of recessive epistasis. However,in the context of gene interactions,the ratio $9 : 3 :

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Supplementary gene

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(B) The $F_2$ dihybrid ratio of $9 : 3 : 4$ is a characteristic of recessive epistasis. However,in the context of gene interactions,the ratio $9 : 3 : 4$ is often associated with supplementary gene interaction where one gene pair modifies the expression of another. Specifically,a supplementary gene is one that produces a trait only in the presence of another gene,but the $9 : 3 : 4$ ratio specifically represents recessive epistasis where the homozygous recessive condition of one gene pair masks the expression of the other gene pair.

The $F_2$ dihybrid ratio $9 : 3 : 4$ is explained on the basis of

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