NEET Biology question

BiologyPrinciples of Inheritance and VariationNEET

Assertion: In humans, the gamete contributed by the male determines whether the child produced will be male or female. Reason: Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on X-chromosome and some on Y-chromosomes.

Answer: (C)

Solution

The Assertion is true: since the mother always contributes an X-bearing egg while the father produces both X-bearing and Y-bearing sperm, it is the father's gamete that determines whether the zygote is XX (female) or XY (male); however, the Reason is false,

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Question ID VK-119699