Snakehead
Bite Me! It's ok
Snakehead-- While that is true, such percentages are only estimates, not guarantees. Though a heterozygous x homozygous pairing should produce 50% homo offspring, there's no guarantee that just 25% will be homo, or even if 75% will be homo. Just like, if you pair het x het, there's no guarantee you'll get any homo offspring, even though you should get about 25% homo.
The reason I consider a test breeding with a known homozygous the only way to know for sure is that it's the only pairing that will really tell you, beyond a shadow of a doubt, what's going on... Because a homo x homo pairing will produce nothing but homo offspring. Likewise, if there are normals in the clutch, you know she can't be homo for the gene in question.
Unless I misunderstand what you mean, hypos in the clutch should be easy to pick out. Normal hatchlings are distinctively very dark in color, where hypo hatchlings are, naturally, very light, often a lighter red in color. The confusion comes as the animals grow and their colors develop. Before all of that, though, differentiating between the two should be easy.
Just my take on the subject...
You are exactly right! I wasn't trying to correct you, as much as I was just letting Terry know that even if no known hypo was available, she might still be able to make some judgements about her snake if she bred it with one of the male offspring. But your correct, it would be better to find a known Hypo. My breedings have fallen within a good range of the expected percentages of offspring. Still your right it's theory, not law. There can alsways be surprises and fluctuations. If the Mom is only het then she could pick the wrong male with no Hypo gene and be back to square one. From the pics it looks like probably normal to me, but from her discription of brownish borders it sounds like a hypo. It's difficult to tell without close up detailed photos.