there is a sex determining region of y that activates a gene of the -- in the undifferentiated gonad to the taxis. if the y is not there, a female gonads develops. each of these have profound consequences. let's look at the testes. they develop in the first seven weeks of euro. -- euro. -- utero.\ this produces testosterone responsible for giving you the male body form the brain characteristic of malfunctioning, as well as heavy aspects of your being. if this sex determining region lacks a why, you have development of an ovary. the ovary secretes estrogen and progesterone, which gives you the female body form and changes in the brain. these are extremely important changes. that's the easy part. this is the anatomical part. the more subtle and elaborate part is the gender identity. that's why we have brought together this spectacular group of people to talk about that. we have been with us -- ben with us. he is a long-term colleague. he is chairman of stanford and a member of the national academy of science. he is a transgender person. he made a decision to undergo a body change, and h

that contains the gene that activates the differentiation of the undifferentiated gonad into the testesif that gene is not there, you have an xx, a female gonad develop. each of those have profound consequences. let's look at the male testes. the testes developed within the first seven weeks in utero. it it matures, the testes releases a massive amount of testosterone comparable to the level you have in puberty. that is responsible for giving you the male body form, the brain characteristics of male function and also every aspect of your being. if the region of y is not there if you have xx, you have development of the ovaries. the ovary, in turn secretes estrogen and it gives you the female body form and gives you changes in the brain. clearly, these are extremely important changes. that's the easy part. this is the anatomical part. the more subtle, the more elaborate part is the gender identity. that is why we have brought together this spectacular group of people to talk about that. as you pointed out, we have ben with u s. ben is a long-term colleague. he is a major scientist in my

undifferentiated gofad into the testes. if that y gene is not there you have an xx you have a female gonad develop. an each of those has profound consequences. let's look at the male differentiation first the male testes. the testes develops within the first seven weeks in utero. and if the testes matures as a result of the sex determining region of y the testes reaches a massive a amount of testosterone comparable to the level you have at puberty and the adult. and that is responsible for giving you the male body form, the brain characteristic of male functioning, as well as having actions and sort of every aspect of your being. if this sex determining region of y is not there if you have xx you have development of of-- ovary it in turn secretes estrogen and progesterone and gives you the female body form and gives you changes in the brain. so clearly these are extremely important changes. and that's the easy part. this is the anatomical part. the more subtle the more elaborate part is the gender identity. and that's why we brought together this spectacular group of people to talk about that. as y