Reptile & Amphibian Forums

what ratio of albinos/hets normals can one expect from the following breedings? (sorry if this is common knowledge)
1 het snake x 1 albino?
1 normal snake x 1 albino?
1 albino X 1 albino?
1normal x 1 het?
out of an avg clutch of,say, 8?
thanks!

>What ratio of albinos/hets normals can one expect from the following breedings? (sorry if this is common knowledge)

All albino snakes that I am familiar with are produced by a mutant gene that is recessive to the normal allele. I am also assuming that "het" means "heterozygous albino".

>1 het snake x 1 albino?

1/2 albino
1/2 heterozygous albino (looks normal).

>1 normal snake x 1 albino?

all heterozygous albino (looks normal)

>1 albino X 1 albino?

all albino

>1 normal x 1 het?

1/2 heterozygous albino (looks normal)
1/2 normal (looks normal)

As these look identical, it takes a breeding test to fetermine what each one is. Until that is done, these are generally lumped together as 50% probable heterozygous albinos.

>out of an avg clutch of,say, 8?

You can work that out from the fractions. Just remember that the fractions given are what is expected from probability theory. What actually comes out of a clutch does not have to conform to those fractions. Especially if the clutch has an odd number of eggs. 8-)

Paul Hollander

thank you for sharing that useful information!though i've kept snakes as pets for a few years,i'm pretty new to breeding them.

ok,next question...
if you get probable 50% hets from a breeding of 1 norm and i het,then how do people get other % possibilities?i've seen animals for sale advertised as possible 25% het,66% het, and so on.is it from breeding with more than 1 mate?

how about 1 het x 1 het?

25% Albino
50% het (normal looking)
25% normal

The normals are referred to as 66%er's because each normal looking baby has a 66% chance of being het for albino

For future reference:
http://www.geneticswizard.com/