If you breed a known het to a normal then all the babies have a 50% chance at being a het. My question is, if you breed a known double or triple het (recessive genes) male to a female normal then what are the first generation offspring? 50% chance of being het for all of the recessive genes or none at all or are they chance hets at each individual recessive gene and/or chance hets of combinations of each recessive genes?
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Genetic question on double het x normal
HDEAN
Jul 21, 2004 01:54 PM
Replies (1)
Paul Hollander
Jul 22, 2004 01:45 PM
They are 50% probability hets for each individual recessive gene. Multiply the probabilities together to produce the probability of a combination.
Example: A heterozygous amelanistic, heterozygous motley corn snake is mated to a normal corn. The babies are 50% probability of being heterozygous amelanistic and 50% probability of being heterozygous motley. They are (0.5 * 0.5 = 0.25) 25% probability of being both heterozygous amelanistic and heterozygous motley.
Paul Hollander
