Posted by:
jeff schofield
at Tue Jan 8 17:07:10 2008 [ Email Message ] [ Show All Posts by jeff schofield ]
Over on the milksnake forum I have initiated the contreversial topic of a "dual-gene theory" to explain the EXTREME hondurans. I will repost it here in regard to trying to find out how you would REMOVE a single gene from a possible dual gene line if you could not identify the dual gene animal by sight alone. Thanks
OK, been taking a bunch of flak for a while now with no ill will and nothing gained. Time has passed and breeding trials with EXTREME lines are commencing so I will put forward a theory available for scutiny(NO CRACK JOKES,lol)and for those with such animals...Here goes nothin....
IF we can assume for a minute there are 3 phenotypes(EXTREME,HYPO,and EXTREME HYPO)and we know that the EXTREME line came from the HYPO line 66% of any EXTREMES will be het HYPO. Now how do we eliminate the HYPO gene from the EXTREME line? I would suggest test breeding to normal het hypos. If the EXTREME is het HYPO(66%)then 50% of the resulting offspring should be HYPO,50% normal het HYPO==all het EXTREME. IF the EXTREME is in fact a EXTREME HYPO then ALL of the offspring will be HYPO het EXTREME.
Now by another generation there will be some strange breeding trials like the one posted below. IF we assume his male is EXTREME het HYPO, and within a generation we find where a male EXTREME(poss het HYPO) was bred to "known" het EXTREME(poss het HYPO)and ALL morphs were EXTREME and none were HYPO then at least 1 of the parents was NOT het HYPO.Resulting offspring would still be 33% hets though.....
I dont have time to finish this here now, but could use the HELP if someone sees the finish line here. Bottom line, it will be MUCH harder to PROVE the "dual-gene theory" than it is to PROVE a HYBINO. It is much harder to remove a gene than it is to put one in,lol. Man I know I should have stuck with the science thing but sales just pays better, ouch my head.
[ Hide Replies ]
 genetics experts - jeff schofield, Tue Jan 8 17:07:10 2008
|
