Principles of Inheritance and Variation Question 109

109. tt mates with Tt. What will be characteristic of offspring?

[1990]

(a) $75 %$ recessive

(b) $50 %$ recessive

(c) $25 %$ recessive

(d) All dominant

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Answer : b

Hints & Solution

(b) On mating tt with Tt, $50 %$ individual offspring are recessive and $50 %$ are heterozygous dominant.