Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
4 Answers
- Anonymous1 decade ago
Why do I have to keep answering this question is this day and age?
The default body plan in humans is female. Males must be made. At about 8 weeks into gestation the Y chromosome of the male that contains the sex determining region ( SRY ) releases a hormonal cascade that completes the construction of proto-male genitalia and closes the female potential. ( No SRY region and female, regardless of chromosomes ) Natural selection is blinded to this trait that does not impede reproductive advantage.
- 1 decade ago
easy answer: why not?
Men have nipples because both men and women, are separated by just one chromosome, which means that we are all alike till hormones set in, and by that time everything has formed. (to some extent)
- 1 decade ago
because the sex of a human being is not determined later in the pregnancy and by that point the nipples have already developed
