Botany-Sex Determination
NEET Botany Sex Determination Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 12
Assertion (A): In the XO type of sex determination, eggs fertilised by sperm without an X-chromosome become males. | Reason (R): In the XO system, all eggs bear an additional X-chromosome besides the other chromosomes.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
In the XO sex determination system, females have two X-chromosomes while males have only one. Eggs fertilized by sperm without an X-chromosome become males as they inherit only one X-chromosome, which explains the assertion.
Found an issue with this question?