This is the title of a program on The Science Channel I have been sitting here watching with great interest. The date is 09-13-2016
It is part of the Series "through The Wormhole" hosted and narrated by the great actor Morgan Freeman.
It is covering ALL aspects of Gender and Sex; and should be REQUIRED watching for all our politicians, religious leaders, and anyone else who has questions or believes TG/TS is just a fiction or figment of a persons mind.
The program has taken on theories and believe me some are truly amazing and have been found now to be FACT.
They have even discovered that there are some genes that should have shut down AFTER puberty; but have not and CAN and ARE transitioning from either male to female or female to male.
So genetically, according this discovery, males could eventually be able to have babies; and females could eventually produce sperm; yet remain in their respective sexual bodies.
IF you can find this particular program on your TV provider, or even possibly on YouTube or Netflix; I would strongly recommend watching it, you WILL BE amazed at what is being done in the field of science and PROVES people who KNOW they are in the wrong body are not crazy, nor are they abnormal in any manner.
Take care and PEACE always to everyone. Janice