Genetics questions you were afraid to ask...

[karlos79]

nice one, thanks
so fingers crossed i get a 1.1 pairing of green ghosts in few go!!!!!!

[andytheanery]

So if I have a pair of anerys boas 66 het for snow I got a 2/3 chance of snows or anerys?

[Ssthisto]

You have a 100% chance of anerys - but you don't have a guaranteed chance of snow, because there's a 66% chance that the male is het for Albino (and a 33% chance he isn't) AND there's a 66% chance that the female is het for Albino (and a 33% chance she isn't) - you need BOTH of them to be het for Albino to get any snows out.

There are four possibilities -

Your male isn't het and neither is your female
Your male is het but your female isn't
Your female is het but your male isn't
Both of them are hets.

Breed them together; if you get no snows, you'll need to test-breed each of them against an Albino to see if either of them is het for albino.

[alfie01]

Just wondered, when talking about Lesser Royals, are do people mean Lesser Platinums or is the Lesser Platinum a different morph??

[Ssthisto]

"Lesser" is equivalent to "Lesser Platinum".

The "Platinum" part seems to be falling off nowadays, not least because of the OTHER Platinum morph (Lesser + Hidden/Mystery/Dilute/Crystal?/Special) which is called Platinum or Platty Daddy after the founding animal.

[Rum_Kitty]

Sorry if this has been asked before, didn't want to read the whole thread lol!

Are ghosts and hypos the same thing? I have heard of different coloured ghosts green/orange etc. but never green hypo? Is hypo just another name for regular ghost, that isn't green or orange?

And do any of the ghost genes combine? Like would breeding two royals het for both orange and green ghost result in a combination of the two genes?

[Ssthisto]

If you're talking royal pythons, then yes, the word "ghost" has been used to refer to "hypomelanistic" animals. A Green Ghost / Orange Ghost / Yellow Ghost / Butterscotch Ghost are all different colour phases of hypomelanism. Some of these are compatible - they're just selectively bred lines that tend to be the colours named; some of them are not compatible and appear to be different genes entirely. Breeding the selectively bred versions of the same gene will produce more hypomelanistic "Ghosts"; breeding two different-gene versions will produce normals heterozygous for each of the two genes.

It's confusing, not least because every other commonly bred species uses "ghost" to refer to an animal that is axanthic/anerythristic AND hypomelanistic. In royals this combination is called "True Ghost"

[Rum_Kitty]

Thanks

[Jokers]

if a cornsnake is t+ what does that mean and what does it do?

[Ssthisto]

T+ is an essentially meaningless description. I don't think the Tyrosinase test has been done on corn snakes to establish which albino-type mutations produce tyrosinase and which ones don't.

A T+ Albino may just be an Ultramel corn snake (I'm not sure enough breeding trials have been done on it). The T+ Albinos I've seen in the flesh certainly LOOKED like Ultramel (and in the case of three of the four, also like recent-Obsoleta-heritage corn hybrids) and the description of two of the three implied that they BRED like Ultramel too.