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Anomalous Hatchlings?

GillianC

GillianC

Herpetologists' offspring
This year I was lucky enough to have a late clutch of eggs from one of my younger females. Out of six eggs, three have hatched and quite frankly, I'm a bit confused! Here's the pairing: Opal 50% het. Motley x Ghost het. Stripe 66% Caramel 50% Amel. The phenotypes of the three hatchlings are 2 aneries and 1 classic. Being a biology major, I do understand genetics, and I understand that this is a possibility, but it deviates quite a bit from what was expected. I guess this means that my female is heterozygous for anery, not motley. Interesting!

Also, both of the animals are from VMS, so they're pretty good about listing any heterozygous traits.
 
Here are some pictures:

IMG_5642.jpg


IMG_5645.jpg


The first photo is of the first hatchling, the second is of the second two. It's a pretty good comparison between the suspected aneries and the obvious classic. What do you think?
 
Don't discount the motley het yet.

Last year I hatched out 15 aneries and 1 snow. This year, in a pairing of a ghost to an amel, I ended up with 7 amels, 4 snows, and 4 aneries. No normals AT ALL.
 
Weird! It's true that I have a very small sample to really get a good idea about the genetics. But I guess I have proven that my opal is het for anery, if nothing else. Still better than nothing!

The fourth has proven to be another classic. And still two eggs to go!
 
During generations, of breeding, some hets (or possible hets) are dropped.
IOW When two parent snakes, that have, let's say, 50% possible hets, are bred ... and the resulting offspring do not show the phenotype, for those parental possible hets, it is "assumed" that the offspring does not carry that het ... so, it is not listed as a possible het. This happens, even more so, if that particular offspring has babies, of its own, that do not show the possible het.
However, it turns out that the "possible het" ~was~ passed along when it, surprisingly, pops up down the line.;)
With so few babies, I agree, with Nanci, in that the mother, being het Motley, should not be discounted just yet. Heck, there have been entire clutches hatched, that did not show the possible het, but it shows up in a second clutch.
 
Makes perfect sense. Especially with corn snakes - almost all of the mutations are recessive, so it's nearly impossible to know what an F3 or F4 generation might be het for if the parents already started out with a few. I'm just excited to have found out that there was something completely unexpected (at least on my end) floating around in her genome. I've e-mailed Sean Niland to ask him if he still has a record of the pairing that produced her - just to see if there are any other possibilities.
 
Also, I was hoping that some (at least one) of the hatchlings might turn out amel. Again, I do realize how small the clutch is so I don't really want to jump the gun on this, but do you think it's acceptable to rule out that my ghost is het. amel?
 
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