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Sex of a human child is determined by...

Sex of a human child is determined by

A

the presence of an X chromosome in egg (or ovum).

B

the presence of a Y chromosome in sperm.

C

the age of father and mother.

D

the length of the mother's pregnancy.

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The correct Answer is:
B
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  5. What is the legal age for the marriage of girls, in our country ?

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  7. Adolescence should be careful about what they eat, because

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  10. Which of the following is a mis-matched pair?

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  11. The hormone which is associated with male puberty is called:

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  12. The dramatic changes in body features associated with puberty are main...

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  13. Which of the following endocrine gland does not occur as a pair in the...

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  15. Which of the following is not a primary sexual characteristic in femal...

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  16. Which of the following is the secondary sexual characteristic in femal...

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  17. Which of the following can lead to menstruation in a 21 year old woman...

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  19. Which of the following hormone prepares oyr body for action in emergec...

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