Reptile & Amphibian Forums

I have a question...(as usuall) Just curious on some genetics. I am getting 2 albino black rats (siblings) hopefully male and a female. Someday I may breed them. But my question is, I will probably breed her someday to a regular black rat. The offspring would be normal black rat het for albinism... Would they be 100% het or 66%? How do ppl decide? and how can something be 66%? Also on a little side note, if you are breeding snakes, say I wanted to breed bairds and a black rat (never would!) would it make any difference which sex is the bairds and which is the black? does it have any effect on possible ofspring?
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0.1 Snow Corn "Hope"
1.0 Redtail "Kilo"
1.0 Ball Python "Road Hog"

100% het. Which means that you are 100% sure that it IS het. When they breed hets to hets, there is uncertainty as to whether the normal-looking offspring are hets, so the % is actually a probability factor.

As for breeding snakes that don't ever breed in nature...Either just plain don't do it...Or consult the "experts" over in the hybrid forum.

Good luck with your new albinos. Duffy

>and how can something be 66%?

If you breed two heterozygous albino black rats, you get 25% normal, 50% normal looking snakes that are heterozygous albino, and 25% albino. Take away the albinos, because they are homozygous albino and not heterozygous albino. The other 75% of all the baby snakes look normal. As 50% of all the baby snakes both look normal and are heterozygous albino, 50%/75% = 66% of the normal looking snakes are heterozygous albino. Which means that each normal looking baby snake from that mating has a 66% chance of being heterozygous albino.

Paul Hollander

so I'm just curious then, doorgunners snakes (2 of which will soon be mine) can anyone tell exactly what genetics they are? he is not very helpfull.... also if I bred them would I get all albino or albino and some normals/hets?
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0.1 Snow Corn "Hope"
1.0 Redtail "Kilo"
1.0 Ball Python "Road Hog"

As I said, you would get ALL albinos. Even though there are actually different "types" of albinos in black rats, if they are siblings and all are albino (which the pic showed) you have two homozygous animals. ALL albino genes, so to speak. If you were to breed one of them to a normal black rat, you'd get normal looking hets. If you, on the other hand, bred one to a normal looking het, you'd get about 50/50 on average.

I WANT to get a normal black rat out of them I have always wanted a black rat but already made arangements for these guys. Don't get me wrong I whole heartedly want these 2 guys. But a black rat is something I've ALWAYS wanted. Maybe next season....
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0.1 Snow Corn "Hope"
1.0 Redtail "Kilo"
1.0 Ball Python "Road Hog"

All I can say is: If you want a normal black ratsnake, you should certainly get one. I know...You are making sure that you have the proper space, etc...That's a good thing. But if you are going to get another snake, a normal black rat would be very inexpensive and a potential future mate for your albinos. My normal-looking black rat (poss het albino/licorice stick!) is one of my favorites. He's getting some real size on him now, and is an impressive animal. With all the morphs out there, sometimes I am most impressed by the "natural" or normal-colored ones. For example, I think that normal corns are just about as impressive as any of the expensive morphs. I got mine for $15 each, and they are beautiful. I have plenty of albinos, though (corns, black rat, "greenish" rat, Texas rat).

I will eventually get mine! I am still not sure about their disposition. good/bad? as compared to a corn... thanks....
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0.1 Snow Corn "Hope"
1.0 Redtail "Kilo"
1.0 Ball Python "Road Hog"