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Sex Determination in Humans

Sex determina...

Question

Sex determination by chromosomes in human and Drosophila is through.

A

XX-XY

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B

XX-XO

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C

ZZ-ZW

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D

Both A and B

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Solution

The correct option is C XX-XY
Sex determination in human and Drosophila is through the XX-XY system where XX denotes female and XY denotes male.
So, the correct answer is 'XX-XY'.

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Q. Select the incorrect statement(s).
(a) Linked genes cause absolute lethality
(b) Persons affected by PKU do not show mental disorder
(c)

F_{2}

ratio in codominance and incomplete dominance are same
(d) Sex of Drosophila is determined by XX-XO chromosomes

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