Posted by:
Kerby...
at Thu Jan 27 21:10:42 2005 [ Email Message ] [ Show All Posts by Kerby... ]
**crossed a leucistic rat snake & my amelanistic corn who is het for snow?**
Actually you do not have an amel corn that is het for snow. Snow is not a single recessive gene but a combination of two recessive genes (amel & anery). If one of the parents of your amel was a snow corn, then your corn is an amel that is het for anery, NOT HET FOR SNOW. So breeding the mentioned above will produce babies (1st generation) that are:
100% het for leucistic
100% het for amel
25% chance of being het for anery
0% chance of being het for snow
All the babies will be normal looking (rat x corn). All the babies will be guaranteed to be double hets (leucistic & amel). THAT IS THE ONLY GUARANTEE. Now if you breed the babies back to each other (2nd generation), you will get some leucistics, some amels, maybe some anerys (since the corn was het anery and all the babies have the chance of being het for anery), and maybe some snows (if the 2 that breed together are BOTH het for anery, we KNOW they are both het for amel & leucistic), maybe some will display leucistic & amel at the same time, some that will display leucistic, amel, & anery at the same time. The odds are low depending upon the clutch size. If 2 snakes are normal looking and are double hets, there is a 1/16 chance that an offspring will show both of those traits at the same time. For example, if you had 2 corns that were normal looking but both were het for amel and anery, then out of 16 eggs one would show both traits (amel & anery, or what we call a snow). That is just the odds, you could very well get better odds or worse odds LOL. At least with corn snakes, they have relatively larger clutch sizes than other species (like cal kings). It can be hard to produce a cal king that shows 2,3, or 4 traits at the same time with smaller clutch sizes.
Clear? LOL
Kerby...
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Actually,......... - Kerby..., Thu Jan 27 21:10:42 2005