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What determines the sex of a child in humans?

Answer and explanation

Correct answer: Sex chromosomes

The governing concept is chromosomal sex determination in humans. Human females generally have XX sex chromosomes and produce ova carrying only X. Human males generally have XY chromosomes and produce sperm carrying either X or Y. Fertilisation by an X-bearing sperm gives XX, while fertilisation by a Y-bearing sperm gives XY. Thus the sex-chromosome combination determines sex; food, blood group and height do not.

Related tags

Sex DeterminationSex ChromosomesHuman GeneticsHeredityHeredity And EvolutionScienceClass 10 Mcq

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