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A human child is typically male when which chromosome is received from the father?

Answer and explanation

Correct answer: Y chromosome from the father

The governing concept is the XX–XY mechanism of human sex determination. The mother’s ovum contributes X, whereas the father’s sperm may contribute X or Y. If a Y-bearing sperm fertilises the ovum, the zygote has XY chromosomes and is typically male; an X-bearing sperm produces XX, typically female. The mother does not normally supply Y, and sex chromosomes are always present. Thus A is correct.

Related tags

Sex DeterminationY ChromosomeMale ChildGeneticsHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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