Botany-Sex Determination
NEET Botany Sex Determination MCQ Question
Type: MCQ-diagram based-Medium-Class 12
In a diagram illustrating the sex determination mechanism in grasshoppers, one observes that some sperms lack a particular chromosome while others have it. Which chromosome is missing in some of the sperms, and what is the consequence of its absence in terms of sex determination?
A
X-chromosome; absence leads to male offspring
B
Y-chromosome; absence leads to female offspring
C
Autosome; absence leads to sterile offspring
D
Z-chromosome; absence leads to undetermined sex
Correct Answer
Option A
Detailed Explanation
In grasshoppers, the XO type of sex determination involves some sperms lacking an X-chromosome, resulting in male offspring when such sperms fertilize the eggs.
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