Are people born with an XY chromosome pair but posessing female sexual organs men or women? What if a person was born with an XX pair and a penis?
Yes there have been cases of this. And here is why.
XX and XY chomosome combinations are not as important as to which gender the baby (in fetal stage) devolops into to as most people think.
What is important in determining a baby’s gender is the proportions of estrogen and testosterone and when those proportions are administered during the child’s devolopment in the womb.
Now the strongest medical evidence as to what causes transsexuals and physical gender deformities (and homosexuality to a degree) is because a person's primal identity (including gender and sexual preference) in the brain devolops at a far earlier stage than the rest of the body.
During the early stages of devolopment in the womb, a XY chomosome brain experiences what is called a testosterone wash, not if there is not enough testosterone administered at this time in devolopment, the XY chomosome brain will default to a female brain. Also, if a XX chomosome brain experiences a testosterone wash, there is a that it will devolop into a male brain.
This is the strongest evidence as to what causes transsexuals and homosexuality.
Later in the XY chomosome fetal devolopment, the XY chomosome body requires a constant supply and high amounts of testosterone to devolop in a male body. If the XY chomesome boby does not get a constant supply of testosterone or not enough of testosterone, the XY chomosome sexual organs and sexual genitals will begin to revert back to female sexual organs and genitals. Also, if a XX chomosome begins to recieve testoster from the womb, then there is a chance that the XX chomosome will begin to devolop male sexual organs and male sexual genitals.
This is the strongest evidence as to what causes physical gender deformities, including a person with XX chomosomes to have a penis and a person with XY chomosome to has a vagina.
Most of you here who have the false view that a person's mental gender is define by their physical gender can trace back your view to the flawed reseach of Dr. Money. Dr. John Money was an idiot who do not follow up on his own reseach. His reseach destroyed a boy's childhood. I honestly don't have the stomach right now to type out the whole tragic story. But if you want the whole story, use a search engine to look up: Dr John Money
. . . . .
During the early stages of devolopment in the womb, a XY chomosome brain experiences what is called a testosterone wash, not if there is not enough testosterone administered at this time in devolopment, the XY chomosome brain will default to a female brain. Also, if a XX chomosome brain experiences a testosterone wash, there is a that it will devolop into a male brain.
. . . . .
Later in the XY chomosome fetal devolopment, the XY chomosome body requires a constant supply and high amounts of testosterone to devolop in a male body. If the XY chomesome boby does not get a constant supply of testosterone or not enough of testosterone, the XY chomosome sexual organs and sexual genitals will begin to revert back to female sexual organs and genitals. Also, if a XX chomosome begins to recieve testoster from the womb, then there is a chance that the XX chomosome will begin to devolop male sexual organs and male sexual genitals.
This is the strongest evidence as to what causes physical gender deformities, including a person with XX chomosomes to have a penis and a person with XY chomosome to has a vagina.
I have heard all that before, and it does not impress me.
The Y chromosome makes you a male and not having the Y makes you female.
That a person's body can be modified by altering hormone levels does not change the underlying genetic makeup of that person.
Here's the thing: Sex developed as a means to enhance adaptation of a species to a changing environment.
Sex did not develop to make penises or vaginas, such structures are secondary.
I do not care what the appearance of a person is--whether the person seems to have a penis or vagina--I care what the person's genes are all about.
Those XX's with so-called penises and those XY's with so-called vaginas, tell me: can the XX's testes (if XX's ever have testes) produce sperm and impregnate a woman? Can the XY's ovaries (if XY's ever have ovaries) produce an egg that can be fertilized?
And if someone who has XX, for example, feels like she has the mind of a man trapped inside a woman's body--can any amount of surgery equip that woman with a male reproductive system producing sperm that bears the person's own X and Y chromosomes?
Sperm that is capable of participating in the continued development of the sexual species?
I doubt such mutations are fertile, and were they fertile, they could no produce sperm with the person's Y chromosomes because they have no Y chrosmosomes. A real man's sperm can contain Y chromosomes, and hence be a real player in evolution--which is why sex exists to begin with.