AIPMT PRELIMS2011Botany-Genetics

AIPMT PRELIMS 2011 Botany Sex Determination MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Which one of the following conditions correctly describes the manner of determining the sex in the given example?

A

Homozygous sex chromosomes (XX) produce male in Drosophila

B

Homozygous sex chromosomes (ZZ) determine female sex in birds

C

XO type of sex chromosomes determine male sex in grasshopper

D

XO condition in humans as found in Turner Syndrome, determines female sex

Correct Answer

Option C

Detailed Explanation

X/A ratio determines sex in Drosophila; ZW is heterogametic (ZW) in birds. In 'XO type' the 'O' determines maleness.

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