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Trihybrid cross - class-XII
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What phenotypic ratio is obtained by selfing of a trihybrid in which two gene pair are completely linked?
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A
$3:6:3:2:1$
💡 Explanation:
When two gene pairs are completely linked in a trihybrid (AaBbCc), they behave as a single unit during inheritance. The phenotypic ratio for the linked genes follows a 3:1 pattern, while the third independent gene follows a 3:1 pattern, resulting in a combined ratio of 9:3:3:1, but the specific linkage configuration here leads to the 3:6:3:2:1 ratio.