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zoyuxi

Sex redefined: The idea of two sexes is simplistic. Biologists now think there is a wider spectrum than that.

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http://www.nature.com/news/sex-redefined-1.16943

 

Some fascinating case studies.

 

A 46-year-old pregnant woman had visited his clinic at the Royal Melbourne Hospital in Australia to hear the results of an amniocentesis test to screen her baby's chromosomes for abnormalities. The baby was fine — but follow-up tests had revealed something astonishing about the mother. Her body was built of cells from two individuals, probably from twin embryos that had merged in her own mother's womb. And there was more. One set of cells carried two X chromosomes, the complement that typically makes a person female; the other had an X and a Y. Halfway through her fifth decade and pregnant with her third child, the woman learned for the first time that a large part of her body was chromosomally male1. “That's kind of science-fiction material for someone who just came in for an amniocentesis,†says James.

 

Sex can be much more complicated than it at first seems. According to the simple scenario, the presence or absence of a Y chromosome is what counts: with it, you are male, and without it, you are female. But doctors have long known that some people straddle the boundary — their sex chromosomes say one thing, but their gonads (ovaries or testes) or sexual anatomy say another. Parents of children with these kinds of conditions — known as intersex conditions, or differences or disorders of sex development (DSDs) — often face difficult decisions about whether to bring up their child as a boy or a girl. Some researchers now say that as many as 1 person in 100 has some form of DSD2.

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Well, this explains a few things. There is one famous person that has this: Jamie Lee Curtis, which is why she can't have biological children.

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I study this kind of stuff in school.  And just to add: when a child is born intersex, they now allow the child to make their own decision on if they are male or female.  And scientist/medical professions have learned this the hard way.  They once thought it didn't matter, that socialization is what makes a person a girl or a boy, so if you raise a boy as a girl, they'll be a girl.  Not true.  Check out the famous story of:

 

http://en.wikipedia.org/wiki/David_Reimer

 

This is the story that changed medical practices.

 

Thanks for sharing, zoyuxi!

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