In a dihybrid cross between two heterozygotes, AaBb AaBb, if we get a 3:1 ratio among the offspring, the reason for this may be

NEET Biology question

In a dihybrid cross between two heterozygotes, , if we get a 3:1 ratio among the offspring, the reason for this may be

(A)Polyteny
(B)Linked genesCorrect
(C)Pleiotropic genes
(D)Hypostatic genes

Answer: (B)

Solution

A dihybrid cross between two double heterozygotes ordinarily gives the 9:3:3:1 ratio only when the two gene pairs assort independently. If the two genes are instead completely linked (located on the same chromosome, showing no recombination), they behave essentially as a single

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Question ID VK-120422