For decades, experts considered that lady creativity is actually brand new default plan, and this male development is actively switched on because of the presence out-of a specific gene to your Y chromosome. From inside the 1990, boffins made statements when they exposed the fresh new name in the gene, that they called SRY. Just by alone, that it gene can also be switch the fresh new gonad out-of ovarian so you can testicular innovation. Particularly, XX individuals who bring a good fragment of the Y chromosome one include SRY create given that males.
By change of century, however, the very thought of femaleness being a couch potato standard alternative was toppled of the development out-of family genes you to definitely actively promote ovarian creativity and you can suppresses the latest testicular programme-instance you to titled WNT4. (suite…)