AIPMT PRELIMS 2011 Botany Sex Determination MCQ Question
Which one of the following conditions correctly describes the manner of determining the sex in the given example?
Homozygous sex chromosomes (XX) produce male in Drosophila
Homozygous sex chromosomes (ZZ) determine female sex in birds
XO type of sex chromosomes determine male sex in grasshopper
XO condition in humans as found in Turner Syndrome, determines female sex
Correct Answer
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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