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Question

Which among the following statements is/are correct with respect to the law of dominance?

A. Each character is controlled by pair of discrete units called factors

B. In a dissimilar pair of factors one is dominant and the other is recessive

C. It explains the expression of one character in F1 and both characters in F2 generation.

D. Explains the proportion of 3:1 obtained in F2 generation


A

A & B only

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B

C& D only

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C

C &A only

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D

A, B, C & D

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Solution

The correct option is D

A, B, C & D


Law of dominance explains that out of the two factors determining a character, one is dominant- this is the one that gets expressed in both homozygous and heterozygous conditions. Dominant character appears in F1 and F2 generations. Recessive character disappears in F1 and reappears in F2 generation.


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