Single correct option
Consider the following statements about sex determination in humans.
1. The sex of the child is determined by the type of sperm that fertilises the egg.
2. All eggs produced by a woman carry an X chromosome.
Which of the statements given above is/are correct?
1. The sex of the child is determined by the type of sperm that fertilises the egg.
2. All eggs produced by a woman carry an X chromosome.
Which of the statements given above is/are correct?
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Show answer and solution
Answer: (C) Both 1 and 2
A woman has XX chromosomes, so every egg carries an X. A man has XY, so half the sperm carry X and half carry Y. A sperm with X gives a girl (XX) and a sperm with Y gives a boy (XY), so the father's gamete decides the sex. Both statements are correct.
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