Jaguar Problems

[rednut]

I appear to have typed inside JP's quote, LOL, don't know how to fix it, so be aware that he didnt say half the stuff Im quoting him as saying, LMAO

Originally Posted by junglepython2

I'm not 100% with Jag genetics, but I'm pretty sure its a codominant trait. Please correct me if I'm wrong.

Cool, I got no clue.

So not really recessive and thus no carries. Jag animals are heterrozygous for the Jag gene. If they homozygous for the Jag gene they are lecusitc which so far means death as none have survived (other then one sick one posted recently).

This^ may support the recessive allele being lethal, especially if co-dominant. Like you said, lecusitc animals are homo-recessive, and they die. Jags are hetero (we think, ATM, LOL), and they appear to be getting sick, but not quite dieing (a mixed phenotype -like would occure with co-dominance- between a healthy animal and a dead animal is presumably a sick animal?). Non-jags appear to be healthy (?thats a guess?)

In text books the AB blood group is a typical example of codominant traits. However homozygous doesn't mean death in that case obviously.

yeah, death only results from when individuals are homozygous recessive and the recessive allele is lethal (Im a redhead, would be dead by that logic )
Codominant, right, I need to brush up on that side of things.

Again, anybody???

[junglepython2]

Albinism is homozygous recessive so that would be a better example for your arguement, which is true for some recessive traits. But not all recessive traits have negative associations and cause death. Many genes would be homozygous in a "normal" or wild type individual without any problems.

Dominant traits can also have negative associations and cause death, however due to this they are usually quickly weeded out of a gene pool as the affected individuals can't breed and pass the trait on. Unless they have variable penetrance or affect an individual later in life after they have already passed on the trait. While recessive traits can smoulder on unnoticed in healthy individuals which are carriers and then surface when two healthy carriers breed.

[rednut]

Originally Posted by junglepython2

Albinism is homozygous recessive so that would be a better example for your arguement, which is true for some recessive traits. But not all recessive traits have negative associations and cause death. Many genes would be homozygous in a "normal" or wild type individual without any problems.

Yeah, perfectly aware of that, thats what the redhead remark was about, Its recessive, Im homozygous, I'd be dead if all recessive genes were bad.

Dominant traits can also have negative associations and cause death, however due to this they are usually quickly weeded out of a gene pool as the affected individuals can't breed and pass the trait on. Unless they have variable penetrance or affect an individual later in life after they have already passed on the trait. While recessive traits can smoulder on unnoticed in healthy individuals which are carriers and then surface when two healthy carriers breed.

^And this is what I was talking about with the lethal mutations persisting in populations when they are linked to a recessive gene. Its like chondrodystrophy in condors, it's still around because heterozygous carriers are unaffected but pops up occasionally when to hetero's pair up, but the embryo dies during development.

I appear to have hijacked this thread and taken it elsewhere.........sorry people, its the last you'll hear from me (for @least 5 minutes)

[moreliainsanity]

Originally Posted by GEARJAMMER

god i hope thats not eviedent in our Aussie Jag-Jungle look a likes

I have been fascinated by this morphs and doing search and reading a few things about them yhe lats week or so overseas sites and here in australia , this has been an interesting reading, Now does this Aussie Jag-jungles look a like exist in australian collection and if they do any chance for pics? I know it is an old thread just find it fascinating. c'mon anyone care to share some pics??? Thanks in advanced

Leigh

[Dabool]

At the end of the day if you inbreed something enough times it will start having problems . most color morphs in animals have come about through domestication (selective breeding) and the fastest cheapest way to selective blood lines is inbreeding. unless you are able to run multiple unrelated lines with exactly the same desired charicteristics . unlikely. bring on the pretty snakes that like to do freaky stuff because their brain is all not developed properly.we are a few years behind the yanks but hopefully we will catch up soon.(sarcasam)