Principle Of Inheritance And Variation Question 228

Question: Pure homozygous offsprings in a dihybrid cross in the $ F_2 $ generation will be

[AIIMS 1984, 93]

Options:

A) 1/2

B) 1/4

C) 1/8

D) 1/16

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Answer:

Correct Answer: C

Solution:

1/8; because in F2 generation by dihybrid cross 16 hybrids are formed in which only 2 are homozygous for dominant and recessive character. The genotypic ratio for homozygous and heterozygous sets of gene is 2 : 14. It is 1/8 of the 16 hybrids.