Quote Originally Posted by Spiritserpents View Post
If the *female* determines the gender, the only way I can see a *male* snake throwing *male* babies is if male bananas are actually actually ZZW, rather like how male calico cats are XXY. But, then, the male bananas should be mostly sterile, so that doesn't work either.

Other option, the female chromosome is often incompatible with the banana-carrying genome, causing failure to develop, along the lines of the fabled 'super spider'?

*flails* this is really strange and really doesn't make sense.
Actually it is the male that determines the sex. Also just because male Calico cats are mostly sterile does not mean that this would apply in ball pythons as they are not calico house cats.