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projected offspring confusion

W

wakajawacka

bcbob
I have a pair of normals het snow that have produced about 80 beautiful babies over the yrs. The weird part is that of ALL those 80 hatchlings only ONE was an amel, NO snows, but over a third were anerys.

Is this a really unusual circumstance? It doesn't match ANYTHING similar to that that I've read about projected offspring. I'd like to use the male with a snow I have next season, but with his past offspring results I'm wondering if I'll just end up with normals and anerys all over again. Does a het trait come in varying strengths, or is it just the luck of the draw having it match up?

Sorry if this question sounds stupid.
 
No question is stupid (not strictly true but you know what I mean lol...), but what I will say is that you can't get 'het snow'. To produce snows you need het amel and het anery.
 
Snake Dave said:
...but what I will say is that you can't get 'het snow'. To produce snows you need het amel and het anery.
Click to expand...
Het snow is the same thing as het amel and anery.

As to your question, it's pretty much just luck of the draw. You have to remember the odds for offspring are per egg, not per clutch.
 
Doesn't luck of draw stink sometimes? Though one advantage is the thrill from seeing the clutch hatch with your fingers crossed, right?

A pair of corns with a single het are predicted to produce 25% offspring with the het trait. But with a pair of corns with double hets such as yours... the predicted outcome in which both het traits show in the phenotype is just 1/16 (or 6.25%). 1/4 x 1/4 = 1/16...it's the algebra we all thought we didn't need in high school, right? If you've had 80 babies with NO snows, just tell yourself the next clutch will have a couple of them in it!!

Now, the good news is that your snakes' hets have been proven since you've gotten amels and anerys. So when/if you pair up your het male next year with a snow your chances go way up for snows (1/4). Now again, since you're dealing with double het snakes, when paired with phenotype such as a snow which is displaying two co-dominant traits, your results will be 1/4 of each trait (snow, amel, anery, & normal). If you put a single het snake with a mutant gene (i.e. amel x normal het amel)... your "desired" offspring arrive at a 50% rate since you've cut the gene pool in half. I hope all this has helped, I'd recommend getting the 'Cornsnake Morph Guide' book, it's a great resource to help with genetics.
 
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