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If the mother contributes X and the father contributes Y what will be the sex of the child?

Answer and explanation

Correct answer: Boy

For the usual human chromosomal system, the mother contributes an X chromosome in her egg, while the father contributes either X or Y in his sperm. Combining the given chromosomes gives X + Y = XY. The XY chromosomal combination is conventionally associated with a male child, so option A is correct. An XX combination would be associated with a female child; options C and D do not follow from the stated chromosome pair.

Related tags

Sex DeterminationXy ChromosomeHuman GeneticsInheritanceHeredity And EvolutionScienceClass 10 Mcq

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