Thanks! That lines up with my guess.Originally Posted by dr del ❤️
iirc female bananas throw regular sex mixes so ~90% of the super bananas would be male. the female banana offspring would throw a regular mix and the male bananas would be female makers ~90% of the time.
I may, of course, be talking through my hat.
The thread linked below indicates that super bananas do end up with a regular sex ratio and some "female makers" and some "male makers".
https://ball-pythons.net/forums/show...-Super-bananas
In that case, it definitely sounds to me like the "male makers" have the banana gene on the Y chromosome and the females and "female makers" have it on the X chromosome. Also does sound like it's in a homologous spot where recombination is relatively frequent (10% or less of the opposite gender bananas) - ball pythons may have Y chromosomes that are much closer in size to the X chromosome than humans' are, there is some evidence for this in Boidae, which would make recombination easier. Not particularly useful information to me, since I'm not a breeder and more inclined towards ecology than genetics, but very interesting all the same. Much appreciated!
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