Intermittent postings from Canberra, Australia on Software Development, Space, Politics, and Interesting URLs.
And of course, Brains...
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Sunday, 2 August 2009
4 comments:
Anonymous commenters - please add a signature (doesn't have to be your real name) on each post of yours. Anne O'Namus, Norm D. Ploom, Angry from Kent, Demosthenes, or even your real initials, it doesn't matter.
Commenters are expected to be polite to each other, but the same standard doesn't apply to comments regarding me.
Australian commenters are very very strongly advised to publish anonymously. Sydney alone has more defamation actions than the entire USA and UK. Nearly double that of the UK in fact.
As Google does not reliably inform me that a comment has been posted, and I have no control over first publication, I assert that all comments are innocently disseminated under the NSW DEFAMATION ACT 2005 - SECT 32 and similar acts.
i'm close to hysterically excited right now.
ReplyDeletei can't wait to use this. It'll take me a bit to settle on what to do. And get some money to sign up for the premium stuff for more options.
"Where do you get those wonderful toys?"
"A significant proportion of FtoMs - at least 10% - are protogynous hermaphrodites. That is, they change naturally from looking somewhat, mostly or completely female at birth to looking somewhat, mostly or completely male later in life."
ReplyDelete...
i wanted to ask you about THIS here on your own blog.
i'm ftm, but have never heard of this.
can you explain it here to me, as a laymen?
-G
also, i saw the fish referance on wiki, but i mean explain what is supposed to cause the same thing in a human female...
ReplyDeletethank you!
-G
G - here's an explanation. It may not be as simple as a sound byte, but should be comprehensible.
ReplyDeleteThere's a number of congenital hormone disorders that cause all babies born with them to look female.
They may look partly, mostly, or completely female to the untrained eye. But some of them have the 46xy chromosomes normally only found in men.
The ones that look mostly or completely female are often brought up as girls.
Come puberty though, all sorts of hormones are released. While people with these conditions may not be affected by most male sex hormones, they are by the ones at puberty, and get some or all of the changes happening at puberty that usually happen long before birth.
So it looks like they get a natural sex change from female to male.
The female-looking form is sterile: the male-looking form may be infertile or sterile.
The most common of the causes for this kind of thing are 17β-hydroxysteroid dehydrogenase type 3 deficiency (17BHDD) and 5α-reductase type 2 deficiency (5ARD).
The gory details about hormone-profile etc are given in my post 17BHDD, 5ARD, and CAIS Summarised.
As for the rare male-to-female apparent natural sex changes, we know little about them. They happen, there appears to be multiple causes, and vary in completeness. But there are so few we have no decent sized sample to say what happens.