Actually, I didn't misunderstand you per se though we are talking about slightly different cases.



You're addressing the case where you want to create a double recessive using offspring from two different lines of fully recessive parents.



My point was aimed at a special case where once linked, the genes operate together such that properly selected double het offspring can give better than normal double het results for generating double recessive offspring.



Let's say someone breeds a normal with a Tremper blazing blizzard. The offspring will naturally be 100% normal-looking double het for tremper albino and blizzard. Now here's the cool part.



Chances are the two traits are already linked because they were inherited from one parent. Breeding the offspring together improves your chances of getting a double het from 1/16 to nearly 1/4. Half of the offspring will likely be double hets, again with pre-linked traits. Finally the last 1/4 will most likely be normal.



Just goes to show that not all double hets are created equal.



Where this might come in handy is if you know the individual genetic makeup of the parents of the animals you purchase and not just if they're double or triple het, etc... There's not enough information in the 'het' classification alone.



I *DO* understand that your comments were directed more at the original question though. I was merely attempting to explain how the odds improve once you get past that linking hurdle (maybe I didn't do the best job of it though).



v/r,



N.F.

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