possible hybrid/inbreeding issues

[ghosthousecorns]

Howdy!
I am curious how someone got a king snake to mate with, not eat, a milk or a corn.

I think a 'bait and switch' technique is used. 2 same-species animals are put together and just as the mating is about to take place one of them is substituted with a different species. Basically they get tricked! I don't breed hybrids so I could be wrong, I just heard this is how its done :shrugs:

 

[wild neonate]

Does your probability for your snake laying slugs greatly increase when attempting a hybridization? Apart from corn/king combos, what other species have you seen hybrids of?

-Adam

 

[ghosthousecorns]

Um
Jungle corn = Corn x King
Turbo Corn = Corn x Gopher
Cornduran = Corn x Honduran Milk
I know there's many more. I think the fertility rate may have to do with how closely related the two species are since Creamsicles seem to be fertile. Who knows? Come on step up to the plate you devil worshipping hybrid people ...J/K !

 

[Spiritmist]

So if a gene is damaged in the father/brother instead of burying it as a recessive by breeding it to a new bloodline/genetic line it comes out as a dominant by breeding it to the mother/sister. Which CAN result in kinked spines, poor feeders, aggression, pop eyes,etc. uke01:
It also produces amels, anerys ,snows, etc :grin01:
Is it good :shrugs: Is it bad :shrugs: I wouldn't buy a "line" bred aquarium fish, but I am sure I have bought a "line" bred snake.

Hi abell,

I wanted to respond to your first sentence in the quote above. It is important to understand that inbreeding is not turning recessive genes into dominant ones. Inbreeding *increases homozygosity* across all loci. (In fact, unchecked systematic inbreeding would eventually lead to complete population homozygosity. We say that it increases the chance of homozygosity by decent, the probability of which is called the inbreeding coefficient (F). F is really nothing more than the probability that two alleles at a given locus are autozygous.)

Anyway, the relevant point here is that by increasing the homozygosity of a population, you are also increasing the likelihood that an individual would be homozygous for some deleterious recessive allele which would then be phenotypically expressed. It does not become dominant; it is just homozygous recessive.

 

[Serpwidgets]

For anyone who is really interested in understanding inbreeding, I would suggest learning about the inbreeding coefficient, and how it is calculated. In simplified terms it is a measurement of the statistical percentage of genes that are inherited identically from mom and dad. It really adds some clarity to the whole issue of inbreeding.

 

[Serpwidgets]

We say that it increases the chance of homozygosity by decent, the probability of which is called the inbreeding coefficient (F). F is really nothing more than the probability that two alleles at a given locus are autozygous.)

Yeah, that too. (That's what I get for posting before I get to the end of the thread, hehe.)

 

[Spiritmist]

Yeah, that too. (That's what I get for posting before I get to the end of the thread, hehe.)

Not a problem, Serp.

 

[Kat]

I would suggest learning about the inbreeding coefficient, and how it is calculated.

What? No link? You're falling down on the job here, Chuck.

Maybe you should add a section on that to the 2007 CSM... or it might make an interesting article for TJSAC...

-Kat

 

[Virago]

I Don't Know Anything About Genetics But.....

If you were trying to find a new morph. eg. Super high yellows would you not have to cross your two high yellows to each other then take the offspring and breed them together to eventually have offspring that would have these super high yellows.

don't know if that made sense.?????

what about CAramel snows? you would have to breed a caramel to a snow then repeat with the offspring correct? you would take your best specimens even if they're related?

Sorry if this didn't make sense, I don't really understand genetics.
a+a=a
Ab+AA=? :shrugs:

 

[Serpwidgets]

If you were trying to find a new morph. eg. Super high yellows would you not have to cross your two high yellows to each other then take the offspring and breed them together to eventually have offspring that would have these super high yellows.

don't know if that made sense.?????

what about CAramel snows? you would have to breed a caramel to a snow then repeat with the offspring correct? you would take your best specimens even if they're related?

Sorry if this didn't make sense, I don't really understand genetics.
a+a=a
Ab+AA=? :shrugs:

There's a difference between selectively bred (polygenic) and simple genetic morphs. To create a caramel snow you are simply combining known genes (caramel, anery, amel) in a certain configuration at three specific locations. It's either on or off in these instances.

To create a selectively-bred high yellow morph, you would probably want to start with the most outstanding examples, breed them together, and cross your fingers. With good selection, you could probably expect an overall improvement from generation to generation, but unless there is an actual "dude! yellow!" gene that single-handedly causes massive yellow production, you wouldn't see the same type of on/off effect, and it wouldn't always be possible to recover the trait after outcrossing. You could also start with average specimens and eventually, through selection, make increasingly yellow offspring.

 

[Canadianmike]

I know old thread...but I was looking for inbreeding problems in corns...Here is a Wright's Inbreeding Coefficient calculator: give each of the snakes in the ancestory a letter...unless you know what the cooefficient values mean or the level at which there is a probablity of inbreeding depression the value is pretty worthless...