The Retriever, Dog, & Wildlife Blog

Posted in wild dogs, wildlife, wolves | Tagged brindle coyote, coydog, coyote | 5 Comments

5 Responses

1. on April 5, 2012 at 9:46 am | Reply masakadoshiba

   Interesting. Shouldn’t there have been a wild source that domestic dogs inherited?

   
   
   • on April 5, 2012 at 8:30 pm | Reply raeganw

     I don’t think so… it could have been a mutation in dogs. It does make me wonder though, what common mutations develop independently in different species and what comes from common ancestry?

     Lightened phaemelonin appears in both dogs and horses (and mice too I think). In horses it’s known that this is caused by a gene called “chinchilla.” The phenotype is very similar between dogs and horses in respect to this gene, but we *know* the “chinchilla” gene is NOT what causes the effect in dogs. So, same outcome but different source.

     There’s others too, like there’s multiple recessive alleles that turn black to brown, but they don’t correlate with shade of brown, and they all have the same effect.

     
     
     • on April 5, 2012 at 8:52 pm | Reply masakadoshiba

       In Shibas, chinchilla causes white/cream, and it dilutes brindle and reds etc, but it doesn’t cause brindle I thought.

       
       
       • on April 5, 2012 at 9:42 pm | Reply retrieverman

         Goldens have the chinchilla, too.

         
         
         • on April 5, 2012 at 9:57 pm | Reply raeganw

           They have something that causes the same effects as chinchilla, but it is technically incorrect to call it chinchilla because we’ve looked at the place chinchilla sits on the genome, and the thing that washes out red in dogs isn’t there.

           http://homepage.usask.ca/~schmutz/dilutions.html#chinchilla

           
           

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