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Sex Determination in Humans

XY sex chromo...

Question

XY sex chromosomes were discovered by

A

Gregor Johann Mendel

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B

M.J.D. White

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C

Nettie Stevens

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D

Robert Brown

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Solution

The correct option is B Nettie Stevens
Nettie Stevens and Edmund Beecher Wilson are credited with independently discovering, in 1905, the chromosomal XY sex-determination system, i.e. the fact that males have XY sex chromosomes and females have XX sex chromosomes.

So, the correct answer is 'Nettie Stevens'.

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