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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