Sex ratio from male maker banana male x banana female

Male ball pythons have XY sex chromosomes, and females have XX sex chromosomes. Expected sex ratio is 1/2 males:1/2 females.

X⁺ = X chromosome with the normal gene that corresponds to the banana gene.

Y⁺ = Y chromosome with the normal gene that corresponds to the banana gene.

X^b = X chromosome with the banana gene.

Y^b = Y chromosome with the banana gene.

X⁺/Y^b = male maker banana male

X^b/X⁺ = banana female

X⁺/Y^b x X^b/X⁺ -->
1/4 X^b/Y^b = homozygous banana male (AKA super banana)
1/4 X⁺/Y^b = male maker banana male
1/4 X^b/X⁺ = banana female
1/4 X⁺/X⁺ = normal female

These are expected results. As the X and Y chromosomes swap pieces occasionally, there may be a rare homozygous banana female (X^b/X^b) and normal male (X⁺/Y⁺).

Dang I'm glad you posted that - I still thought they had wz. :oops: