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We Were All Female... Once

Sorry gents, but your manly bits used to be lady parts. Ever wonder why you have nipples?

submitted by: PixelMitch
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We Were All Female... Once. Sorry gents, but your manly bits used to be lady parts. Ever wonder why you have nipples?
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Hits: 7029 | Favorites: 0 | Emailed: 0 | Rating: 2.3 | Category: Science | Date: 01/10/2013
 
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thesandwich
Male, 18-29, Midwest US
 151 Posts
Friday, January 11, 2013 1:00:16 PM
Actually at about 6 weeks in development the embryo forms both mesonephric ducts (which will form the epididymis in males) and paramesonephric ducts (uterine tube in females) and one will degenerate depending on hormones (due to the Sex determining Region of the Y chromosome[SRY]), which is why if there is no Y gene or it is inactive the default gender is female. At this time the external genitals are identical in both males and females and are not fully differentiated (macroscopically) until week 20.
Lifted straight from an anatomy textbook, almost verbatim.
Your not gender neutral or female at that point, your both immature genders.

LordJim
Male, 60-69, Europe
 5512 Posts
Friday, January 11, 2013 9:28:49 AM
I knew this in general terms, but it is well explained.

ferdyfred
Male, 40-49, Europe
 13233 Posts
Friday, January 11, 2013 1:00:07 AM
Must explain why Im crap at finding things

Quackor
Male, 18-29, S. America
 2864 Posts
Thursday, January 10, 2013 7:43:46 PM
thats so gay

carmium
Female, 50-59, Canada
 6406 Posts
Thursday, January 10, 2013 7:13:29 PM
Around 1:18, he mentions "If the Y chromosome does not become activated..." That's how you can get XY females, like the late movie star Kim Novak. Infertile, but often very feminine. Makes you think.

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