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Rexing gene dominant in rats2007-11-24 22:14:53

Hiya.

Reading up on ratty genetics with a plan to breed in the distant future. Particularly interested in rex and dumbo varieties.

Is the rex gene dominant? So if you mate a rex rat to a smooth coat then you get hetrozygous rex babies?

Also I've heard the dumbo gene is recessive, so if you mate a dumbo with a top ear, you get heterozygous top ears? Then if you mate a heterozygous top ear to a dumbo, 50% of the babies will be dumbos and 50% top ears?

Of course nature rarely works to such precise figures, but I'm speaking in terms of chance.

It'd be great to get some insight from a breeder. Thanks x

Answers:

To really get what you want as a breeder you need to start your breeding with rats of known genetics, known lineage. This will require you getting your rats from reputable breeders. Rats from pets stores and rescued rats are a mixed bag of genetic material and some of that genetic material makes rats bred willy-nilly prone to diseases.

Rat Genetics code

http://www.boardmanweb.com/rattery/genet...

It's a lot of work, reading up on genetics. Here's an example of a breeder who knows her lines.

http://www.pxrats.com/geneticsnonagouti.

Rex genetics?

http://www.skyclyde.com/geneticscurlycoa...

Dumbo genetics?

http://web.ukonline.co.uk/spladoosh/gene...

http://web.ukonline.co.uk/spladoosh/stan...

http://members.aol.com/ristorat/dumbo.ht...