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Asked: 2025-09-26T11:31:58+00:00 In:

Q.8. Assertion (A): The sex of a child in human beings will be determined by the type of chromosome he/she inherits from the father. Reason (R): A child who inherits ‘X’ chromosome from his father would be a girl (XX), while a child who inherits a ‘Y’ chromosome from the father would be a boy (XY).

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Poll Results

100%A. Both A and R are true, and R is the correct explanation of A. ( 1 voter )
0%B. Both A and R are true, and R is not the correct explanation of A.
0% C. A is true but R is false.
0%D. A is false but R is true.
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The correct answer is [A] Both A and R are true, and R is the correct explanation of A.
The father contributes either an X or Y chromosome. If the child inherits X from father, it becomes XX (girl), and if Y, it becomes XY (boy).

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    1 Answer

    1. ANSWER: [A]

      Explanation: The correct answer is A. Both A and R are true, and R is the correct explanation of A.

      The sex of a child is determined by the father’s chromosome.

      Father contributes either X or Y chromosome.

      XX → girl, XY → boy.
      Thus, the reason correctly explains the assertion.

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