Botany-Sex Determination
NEET Botany Sex Determination MCQ Question
Type: MCQ-numerical-Hard-Class 12
In a species with XO type sex determination, if a population has 100 females, how many X chromosomes are expected in the total population?
A
150
B
200
C
250
D
300
Correct Answer
Option C
Detailed Explanation
In the XO type sex determination, females are XX and males are XO. If there are 100 females (XX), they contribute 200 X chromosomes. For every 100 females, there are typically 100 males (XO), contributing 50 X chromosomes, totaling 250 X chromosomes.
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