>>13849305What we could do is add in a third gene or something that determine if you will become a futa or not, and either pair it up with the x chromosome or the y chromosome. The advantage of using the y chromosome would be that there would be a 3:1 ratio of girls to boys born, but 1/3 would be futas. Or, we could keep it at the current gender ratio by using the x chromosome but have 50% of females being futas.
Now, all we have to do is isolate the genes for genital development, and then attach receptors to them so they can be turned on exactly how testosterone attaches to receptors. Ecdysterone, a "molting hormone" in arthropods, could be used as a ligand since it serves no purpose in the human body as steroid, and it's pretty easy to manufacture from cholesterol. It's also been used experimentally in animals to "switch on" genes already, so it's a perfect candidate for becoming a "third sex hormone".
I believe they even created futanari already with mice by altering certain genes involved in genital formation, I'll have to find the paper somewhere. But what would've become the clitoris became a penis instead, but with a vaginal opening beneath it.
>>13849403Nah, I'm looking to create literal girls with penises. As in everything is exactly the same, except they have a huge, throbbing cock.