Are you talking about fitting poses or the penis turning into a vagina? You know that the Genesis 1 figure is both genders, and the male gens and female gens fit the figure either way. Back then the figure didn't have the connecting taint or the anus attached, that came with Genesis 3 and 8. And almost no one maked morphs to open the 9 polygon anus opening as it will look like crap open.
So could you explain what you mean about it going male to female? That is confusing. Genesis 1 is a Universal Figure, both male and female. They split it after Genesis 2 into 2 separate figures, each with their own fitted genitals.
There were some Genesis morphs for the male gens at Renderotica and some at ShareCG long ago if I remember.
AnjaBear