hmmm (reletive genetics)

VieT · #1 (**permalink**) 13-08-2007, 01:48 PM

was reading some1s post in snake general when i came across "shall put him with hsi 2 sisters"

can you interbreed snakes without deformed offsping ? or is it frowned upon??

i know u can with mice but you do get "SOME" deformaties but the mother sorts it out when they are little

peace

James

captaincaveman · #2 (**permalink**) 13-08-2007, 01:54 PM

No, its not frowned upon, pairing siblings is more common than you think and we wouldn't have the morphs we do without it, some also do 2nd generation too, but 3rd generation and beyond can cause issues

toyah · #3 (**permalink**) 13-08-2007, 02:01 PM

Inbreeding does not cause deformities or genetic problems - but it can bring to the surface genetic problems that are carried by the parent snakes. So if you buy a healthy snake from an inbreeding, then statistically, that snake is LESS likely to hide any genetic abnormalities then a snake from an outcross (unrelated parents).

Remember as well things like feeding response, size, fertility, etc, are all also partially governed by genetics. If you inbreed on a pair of snakes that are big, strong snakes with great feeding responses, then you're more likely to produce more of the same. But if you inbreed on weak runty snakes that don't feed well, then you'll most likely get more of those instead.

Inbreeding is a great tool to use responsibly to produce good quality animals - it just needs, as any breeding does, thought and care put into the matings you're doing to ensure you get the best offspring possible from it.

captaincaveman · #4 (**permalink**) 13-08-2007, 02:14 PM

yeah, take something like a genetic kink in the tail(or carrying that genetic trait), if you have two siblings that both carry this genetic default then, you would enhance that poor trait, in much the same way as selectively breeding two siblings that show good traits like colour, band width etc then it helps enhance a morph

Ssthisto · #5 (**permalink**) 14-08-2007, 07:23 PM

And, of course, you can use inbreeding as a 'diagnostic' too.

This is pertinent in things like the Sunkissed Stargazing trait - a recessive trait that makes the corns express wobbly, erratic movement, sometimes even crawling upside-down, when they're stirred up, excited or feeding.

If you have one pair of Sunkissed corns who produce a quarter Stargazers and three quarters non-stargazing corns, you know that 66% of the non-visual Stargazers are likely to CARRY stargazing. It's the RESPONSIBLE thing to do to retain the entire clutch and breed them ALL back to the opposite-sex parent to find out which 33% are non-carriers.

captaincaveman · #6 (**permalink**) 14-08-2007, 07:26 PM

Quote:

Originally Posted by Ssthisto

And, of course, you can use inbreeding as a 'diagnostic' too.

This is pertinent in things like the Sunkissed Stargazing trait - a recessive trait that makes the corns express wobbly, erratic movement, sometimes even crawling upside-down, when they're stirred up, excited or feeding.

If you have one pair of Sunkissed corns who produce a quarter Stargazers and three quarters non-stargazing corns, you know that 66% of the non-visual Stargazers are likely to CARRY stargazing. It's the RESPONSIBLE thing to do to retain the entire clutch and breed them ALL back to the opposite-sex parent to find out which 33% are non-carriers.

has that been isolated yet?

Ssthisto · #7 (**permalink**) 14-08-2007, 07:47 PM

What do you mean by "isolated" ?

I know that people are working on testing which sunkissed and sunkissed line animals are carriers and which ones are not - and that there is the beginning of a list of known carriers, as well as an "exchange" for people to test out their lines with a known S-Factor animal.

I also know that Stargazers have cropped up in animals who are out of Sunkissed lines but are not visually Sunkissed. Which implies it's a recessive gene that's tagged along with Sunkissed in some way (maybe a sunkissed animal had a heterozygous gene mutation that, when its offspring were bred together produced the first Stargazers)... but that it is not limited to Sunkissed animals.

captaincaveman · #8 (**permalink**) 14-08-2007, 08:03 PM

oh ok, i thought there was work going on to halt those particular lines at one specific breeders

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