

InterviewSolution
Saved Bookmarks
1. |
Sex is determined in human beingsA. by ovumB. at the time of fertilisationC. 40 days after fertilisationD. seventh to eight week when genitals differentiate in foetus |
Answer» Correct Answer - B In human beings male produces two types of sperms. 50% of them carry X-chromosome and 50% have Y-chromosome. Sex in human beings is determined at the time of fertilisation because sex of baby depends upon which sperm fertilises the ovum. |
|