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CBSE Class 10 Science Question 18 of 46

Solved 2023 Question Paper CBSE Class 10 Science — Question 18

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18
Question

Question 18

Assertion (A) : Genes inherited from the parents decide the sex of a child.

Reason (R) : X chromosome in a male child is inherited from his father.

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
  3. (A) is true, but (R) is false.
  4. (A) is false, but (R) is true.
Answer

(A) is true, but (R) 1s false.

Reason — Sex of a child is decided by the chromosome (X or Y) of father that is inherited by the embryo. Genes on chromosome Y are responsible for male child.