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Ouch!And as for your comment earlier about so far ahead or behind, that'd be the later.
From Human Origins 101, by Holly M. Dunsworth. p. 21.
"Nipples on male mammals are not vestigial traits, as they do not signal an ancient state of male milk production. Male nipples are simply the result of an interesting developmental process. All humans begin development as a female and not until about the seventh week does an embryo with a Y chromosome start developing as a male. This transition occurs after the development of the mammary glands underneath it. Male nipples are simply stamps in the mammalian passport of development."
I haven't the faintest. I think the author just got carried away in her metaphorical prose.Everything but the last sentence fits. How'd we move from genetics to a "passport of development"?
Neither do I. . . . .family resemblance perhaps??I like my nipples, I'm glad God saw fit to give them to men as well.haha, titillating. . . oh and Washington, your chimpanzee disturbs me, I don't really know why. . .
Actually, one person told me the chimp's apparent comprehension of evolution, and his ability to convey that understanding, was a little unnerving.
evolution predicts vestigial organs and parts. your straw man has been discovered.
Yes. Just like ID.
Fine. But are the vestigial organ diminishing with time?
...
Also, how else would a guy know when it's cold outside?
This post is absolutely titillating, no?
Male nipples aren't selected against. They are useless, but not a liability.If yes, why do we (men) still have nipples? Are they getting smaller through time?
If you only understood ToE a little better! If they are vestigial, why are they still there????!!!??? Shouldn't they have disappeared by now?Male nipples aren't selected against. They are useless, but not a liability.
Doubtful: they'd only get smaller if there was any reason for them to. Since there's no real detriment in male nipples, there's no selection pressure affecting them.If yes, why do we (men) still have nipples? Are they getting smaller through time?
Male nipples aren't selected against. They are useless, but not a liability.
I don't know if "every animal have more or less one or more useless organ". Maybe they do, maybe they don't. Non-issue really.Does every animal have more or less one or more useless organ? If so, why are we not loaded with useless (but not liable) organs?
They could also get smaller because there was no reason for them to get bigger.Doubtful: they'd only get smaller if there was any reason for them to. Since there's no real detriment in male nipples, there's no selection pressure affecting them.
But likewise, they could get bigger, because there's no reason for them to get smaller. Overall, they stay the same, no?They could also get smaller because there was no reason for them to get bigger.
I'd imagine so, though there's probably some obscure species of field mouse whose males don't get nipplesHmm... do all male mammals have nipples?
Vestigial traits tend to adopt some other function than their original, if only because a useful vestige is better than a useless one. Problem is, male nipples are so pointless that there's not much they can be adapted for.Does every animal have more or less one or more useless organ? If so, why are we not loaded with useless (but not liable) organs?
They could also get smaller because there was no reason for them to get bigger.
Hmm... do all male mammals have nipples?
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