Spotteddog Interactive BioStudio:Genetics


If you're feeling confident about your genetics expertise, try this:

A couple of Louisiana Catahoula dog breeders have bet this year's Mardi Gras parade float on whether their next generation of puppies will have spotted black coats. Can we help them? Of course, in dogs, black coat color [B] is dominant to red coat color [b], and solid coat [S] is dominant to spotted coat [s].

Question: If a dog with a solid black coat (genotype : BbSs) is crossed with a dog with a spotted black coat (genotype: Bbss), what percentage of the puppies will have a spotted black coat, assuming the two genes are unlinked (show independent assortment ?

 


[ HOME ]