2007-05-08 01:54:11 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Because before they actually become boys, they develop along the same line as girls. The nipples form, but they fail to develop into the usual female breasts at puberty.
This is a very commonly asked question. You can check out a bunch of other yahoo answers entries here or have a look at some of the other links I've put there below.
2007-05-08 02:07:49 · answer #1 · answered by Orinoco 7 · 2⤊ 0⤋
Men have nipples because the genetic code is based upon the female structure.
Both males and females have an X chromosome (a part of their DNA)... however males also have a Ychromosome, this means that boys produce hormones that overcome their female genetics... and so their nipples do not develop.
All people have nipples... but it is the male hormones that stop their nipples from becoming big.
2007-05-08 02:09:52 · answer #2 · answered by haratu 4 · 0⤊ 0⤋
u c all mammals during their development until the determination of their sex they develop in the same manner, so till then they hav lot of common factors so if the child is said 2 b a male then the nipple fail 2 develop whereas the case of female it develops
2007-05-08 02:35:48 · answer #3 · answered by Jason 3 · 0⤊ 0⤋
Cause they're fun! All mammals, male and female have them - Dogs, Cats, You and Me.
2007-05-08 02:09:40 · answer #4 · answered by Barb Outhere 7 · 0⤊ 2⤋
girls also have
2007-05-08 02:05:16 · answer #5 · answered by MR.COLD 2 · 0⤊ 2⤋