Q4 of 47 Page 77

Why do all the gametes formed in human females have an X chromosome?

In human females, there are 23 pairs of chromosomes. Out of which 22 is autosome chromosomes and one pair is sex chromosome i.e., two X chromosomes. During gametogenesis, each gamete formed by females contain only the X chromosome (22 A + X ). Hence, all female gametes in humans have X chromosome.


More from this chapter

All 47 →
2

Does genetic combination of mothers play a significant role in determining the sex of a new born?

 3

Mention three important features of fossils which help in the study of evolution.

 5

In human beings, the statistical probability of getting either a male or female child is 50 : 50. Give a suitable explanation.

 6

A very small population of a species faces a greater threat of extinction than a larger population. Provide a suitable genetic explanation.