AIPMT PRELIMS2003Botany-Genetics
AIPMT PRELIMS 2003 Botany Sex Determination MCQ Question
Type: MCQ-conceptual-Medium-Class 12
In Drosophila, the sex is determined by :-
A
The ratio of number of X⁻chromosomes to the sets of autosomes
B
X and Y chromosomes
C
The ratio of pairs of X⁻chromosomes to the pairs of autosomes
D
Whether the egg is fertilized or develops parthenogenetically
Correct Answer
Option A
Detailed Explanation
In Drosophila, sex determination is based on the ratio of X chromosomes to sets of autosomes. A ratio of 1.0 results in a female, while a ratio of 0.5 results in a male.
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