Double Rex aka Patchwork Genetics

Ok. My Dumbo had a litter Xmas day. 9 gorgeous little pups. The dad is a Double Rex (always has hair on his face-sometimes more. Sometimes less. He also has very sparse hair in patches over his body, but looks hairless at a glance). Anyway, 3 of the pups have straight black fur and whiskers. 6 of them have curly whiskers and a very thin coat. I think these would be single Rex? Or am I mistaken?

http://i696.photobucket.com/albums/v...s/IMG_0355.jpg

http://i696.photobucket.com/albums/v...s/IMG_0357.jpg

Forgot to add: Mom is beige with ruby eyes. Supposedly no hidden genes. Just a Dumbo.

i think the rexXrex makes a few double rexes, few normals, few rexes. double rex bred to normal makes a few rexes and normals??? i dont know really i havent got my double rex male to breed yet (hes gay) but i have had a rex breed some normals and some other rexes and got rex babbies. one thing i did notice is some turned out to be rexes alot later than others in the same litter... id say 2 weeks till they turned out to be rex.
just for kicks here is a naked one i have
http://i86.photobucket.com/albums/k8...s/PIC_0236.jpg

I have had double rex breed to a normal and throw entire litters of double rexes... I expected to get rexes (always been shady on rex genetics).

But have to say that double rexes are one of my favorite rats. I have 3 girls that are all naked bodied with fuzzy faces. They look like convicts. :D

Bruce

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Originally Posted by Bruce Whitehead

I have had double rex breed to a normal and throw entire litters of double rexes... I expected to get rexes (always been shady on rex genetics).

But have to say that double rexes are one of my favorite rats. I have 3 girls that are all naked bodied with fuzzy faces. They look like convicts. :D

Bruce

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Are you sure that normal wasn't a low quality rex? I've run in to that a couple times with our rats. Just a few weeks ago I got a litter with all rexes in it from a non-rex male bred to what I thought was a non-rex female. After digging through the records, it turned out she was a rex, we had just forgotten. :P A lot of times female rexes will lose most of their curliness as they get older.

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Originally Posted by Bruce Whitehead

But have to say that double rexes are one of my favorite rats. I have 3 girls that are all naked bodied with fuzzy faces. They look like convicts. :D

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Lol...that's exactly how he looks. I thought about a little prisoner's uniform for him for Halloween :D

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Originally Posted by irishanaconda

i think the rexXrex makes a few double rexes, few normals, few rexes. double rex bred to normal makes a few rexes and normals??? i dont know really i havent got my double rex male to breed yet (hes gay) but i have had a rex breed some normals and some other rexes and got rex babbies. one thing i did notice is some turned out to be rexes alot later than others in the same litter... id say 2 weeks till they turned out to be rex.
just for kicks here is a naked one i have
http://i86.photobucket.com/albums/k8...s/PIC_0236.jpg

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What a cutie! I love these guys.

So far, looks like 3 Standard coats and 6 Double Rexes. One even has the same exact pattern as the sire's (convict beard). The rest just look mangy...lol.

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Originally Posted by Muze

So far, looks like 3 Standard coats and 6 Double Rexes. One even has the same exact pattern as the sire's (convict beard). The rest just look mangy...lol.

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do u know about "patchwork hairless"?

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Originally Posted by irishanaconda

do u know about "patchwork hairless"?

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Well, fairly new I must admit. From what I've read (& was told by one local breeder), Patchworks are Double Rexes. Not true hairless. Hair is just apparently very thin and breaks off (?). And it seems to be a Dominant gene (not recessive at least). The other info I've come across is that they do not seem to have the same health issues that some hairless rats have.

But I am definitely hoping to learn more!

Quote:

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Originally Posted by Muze

Well, fairly new I must admit. From what I've read (& was told by one local breeder), Patchworks are Double Rexes. Not true hairless. Hair is just apparently very thin and breaks off (?). And it seems to be a Dominant gene (not recessive at least). The other info I've come across is that they do not seem to have the same health issues that some hairless rats have.

But I am definitely hoping to learn more!

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from what i learn is some grow hair in spots, then it falls out then grows other places... kind of cycles like that, where as a double rex just is bald with some having a few straggler hairs.... i think, not sure thou

I'm really not a 100% sure, but I found this (which is pretty what I keep coming accross on the net, but doesn't mean it's the absolute truth):

"Patchwork hairless rats maintain a certain amount of short, soft fur on their bodies and patches where they are bald. The fur will periodically fall out and grow back in throughout the rat's life in different patterns. They usually maintain whiskers though they are generally brittle and curly. While they are more prone to allergies, they are hardier than the true hairless rats and should live an average lifespan. The females also have no problems reproducing or raising litters. There are three strains of patchwork hairless rats:
1) Double rex: produced from two rex-coated parents (ReRe). Different from the other two strains as they tend to keep some fur on the face, head, feet and ankles while maintaining a mostly hairless body. If bred to a normal-coated rat they will produce rex-coated pups. If bred to a rex or velveteen-coated rat they will produce double rex pups.
2) Double Velveteen: produced from two velveteen-coated parents (CuCu). If bred with a normal-coated rat will produce velveteen-coated pups. If bred to a velveteen or rex-coated rat they will produce double velveteen pups.
3) Double velveteen/Double rex: produced from one double rex-coated parent and one double velveteen-coated parent (CuCuReRe). If bred to a normal-coated rat they will produce rex-coated and/or velveteen-coated pups."

Blurb of an article written by LEX exotics.