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Ask a biologist

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Ask a biologist
Brian37 Offline
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#31
RE: Ask a biologist
May 23, 2015 at 7:43 pm
Why are there nipples on men?
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nihilistcat Offline
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#32
RE: Ask a biologist
May 23, 2015 at 8:29 pm (This post was last modified: May 23, 2015 at 9:24 pm by nihilistcat.)
(May 23, 2015 at 7:43 pm)Brian37 Wrote: Why are there nipples on men?

It has to do with early development. Initially, the embryo follows a female developmental path (it doesn't express testosterone in the first two months of development), and by then it's too late (we're stuck with mammary papilla). 
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Anomalocaris Offline
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#33
RE: Ask a biologist
May 23, 2015 at 9:05 pm
Explain how sex came to be.
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nihilistcat Offline
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#34
RE: Ask a biologist
May 23, 2015 at 9:22 pm
(May 23, 2015 at 9:05 pm)Chuck Wrote: Explain how sex came to be.

Tough one ... because it's not well settled (difficult to test). Asexual reproduction arose first (single celled organisms basically just dividing), and early in the evolutionary process, either a mutations arose (creating parasitic genetic elements) or through an endosymbiotic process, bacterial proteins that were able to induce meiosis in eukaryotic cells (there's also an RNA theory of sexual reproduction). 
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ignoramus Offline
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#35
RE: Ask a biologist
May 23, 2015 at 10:01 pm
what he's trying to ask is:
When did the first animal poke it in and get dirty and slutty!
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Anomalocaris Offline
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#36
RE: Ask a biologist
May 23, 2015 at 10:17 pm
Sex is not restricted to animals.
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nihilistcat Offline
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#37
RE: Ask a biologist
May 23, 2015 at 10:36 pm
Of course not, plants have sex (sort of) Smile
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ignoramus Offline
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#38
RE: Ask a biologist
May 23, 2015 at 10:54 pm (This post was last modified: May 23, 2015 at 10:54 pm by ignoramus.)
ouch ...then again, Vorlon might love being a female cactus!
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Lemonvariable72 Offline
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#39
RE: Ask a biologist
May 23, 2015 at 10:57 pm
(May 23, 2015 at 10:36 pm)francismjenkins Wrote: Of course not, plants have sex (sort of) Smile

And there is a porno for it 

To-morrow, and to-morrow, and to-morrow,
Creeps in this petty pace from day to day,
To the last syllable of recorded time;
And all our yesterdays have lighted fools
The way to dusty death. Out, out, brief candle!
Life's but a walking shadow, a poor player,
That struts and frets his hour upon the stage,
And then is heard no more. It is a tale
Told by an idiot, full of sound and fury,
Signifying nothing.
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Anomalocaris Offline
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#40
RE: Ask a biologist
May 23, 2015 at 11:04 pm
How about pronos of single called fungi having sex?
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Ask a biologist



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