Quote Originally Posted by kxr View Post
No, you were right, but you said in your previous post if you bred a male burm to a het female ball it would produce ZZ phenotype babies. I guess I should have assumed you meant to say a homo female ball python.

Yeah, you would get ZZ offspring if you bred a ZZ male burm to a ZZ female ball so they would all be a single sex. That's why I wanted to try the cross. If the cross only gave off one sex then you would know that female balls are indeed ZZ.

Now all I'm thinking is would a ZZ burmball be able to breed both male ball pythons and female Burmese pythons or would it be infertile... I think I've fallen too far down the rabbit hole lol

Edit: I just saw that you said whichever species had the larger gamete would decide gender. How does that work?

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Sorry that was my bad. I meant to say homo ZZ. Producing all of one sex (over several trials and specimens of course) would prove that they differ from burms in their sex gametes. It should still be fertile like other burmballs, but only trials would tell.

Because (in this hypothetical situation) in one species ZZ codes for male and in the other it codes for female the larger sex chromosomes would determine which species decided the sex. I'm not exactly sure of the specifics on this though.

We still have so much to learn about this. Fortunately the burms genome sequence gives off something to work off of but obviously it isnt the same so there are areas that we are left to assume are the same with balls.


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