I think it's because men have a piece missing. They should have been women, but were not formed properly. That's why they still have nipples!!!!!!!!!! what do you think?
2007-03-11 12:57:31 · 11 answers · asked by saddo 3 in Social Science ➔ Gender Studies
Males have nipples because all fetuses follow a similar path of embryological development until the fourth month in utero, when a release of testosterone triggers "male" development.
The Y chromosome DID evolve from the X, and is much smaller.
However, that doesn't mean that males should have been females. Sexual reproduction was one of the most successful advances of evolution.
2007-03-11 13:10:43 · answer #1 · answered by stormsinger1 5 · 2⤊ 0⤋
Men have XY because:
1. It allows survival.
2. It promotes sexual reproduction.
Simply put, all men actually have the genes found on an X chromosome. The only difference is that they have only a single copy and alterations on their single copy has a greater influence on their ability to survive and reproduce.
This alters their reproductive ability to reduce the likelihood that manifested genetic pathologies are lost in that generation.
Because of this combination, the loss of genes that are not required for reproduction off the Y-chromosome's ancestor was both not critical for those who first had the mutation AND was actually adaptive as a species...
So, that's why the Y is the way it is and the X is the more stable of the two...
(Note: Flaws in the Y tend to affect reproduction and are, by definition, more difficult to pass on making it stable in a minimalist sort of way...)
2007-03-11 15:55:20 · answer #2 · answered by Deathbunny 5 · 0⤊ 0⤋
It's not "missing," it's a different chromosome. They were formed properly and are quite successful; that's why many animals (and all mammals if I'm not mistaken) exhibit sexual dimorphism- because complementary differences are effective. That said, women don't really use both of their X-chromosomes because of X-inactivation anyways. Men still have nipples because they are basically vestigial, and it's a lot easier for evolution to MODIFY rather than just cut out completely.
2007-03-11 14:07:43 · answer #3 · answered by Robinson0120 4 · 1⤊ 0⤋
Correct
2016-03-29 00:41:47 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I think you are biologically misinformed and have been told so repeatedly. We are a SEXUALLY reproducing species.
2007-03-11 16:13:12 · answer #5 · answered by Anonymous · 1⤊ 0⤋
I think that's ridiculous, and only a complete idiot would believe that.
2007-03-11 14:18:11 · answer #6 · answered by wendy g 7 · 1⤊ 1⤋
I think this smacks of misandry, that's what I think.
2007-03-11 14:05:36 · answer #7 · answered by ? 6 · 0⤊ 1⤋
Don't be shy.If you have something to say.Say it.
2007-03-11 13:02:53 · answer #8 · answered by Butt 6 · 0⤊ 0⤋
xx is the t!ts and @ss chromosome.
2007-03-11 13:17:56 · answer #9 · answered by nakatablue 2 · 0⤊ 4⤋
you c o c k
2007-03-11 13:00:30 · answer #10 · answered by Peter B 1 · 1⤊ 1⤋