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Posted by Dwight Good on August 10, 2002 at 10:04:02:
In Reply to: I\'m no expert, but it seems to me ... posted by patricia sherman on August 10, 2002 at 01:02:11:
:The association of bug-eyedness with leucism, may simply be coincidental. The first leucistic may have been (probably was) a carrier. Hence, 50% of the progeny of that ancestor would have been carriers. By outbreeding the descendants, we perpetuate the hidden passage of the gene through several generations, and it may be done without it appearing in any of the progeny provided each of those offspring is mated to a non-carrier; however, it will show up in 25% of the progeny of a clutch derived from two carriers.
Tricia,
I believe that eye problems are strictly associated with the leucistic mutation, as chrish suggested. It doesn't affect normal colored individuals, I think Dr. Bechtel did work on this in the early/mid 80's. But do you think it is possible for a linked gene to be inherited as a simple recessive among individuals (as in my breeding examples?) Or do you think it could have just been 'dumb' luck that I don't get bugeyed animals from certain females??
Also for what its worth, all the bug eyed specimens I have seen were males. Could it also be a sex linked trait???
dg
