Just like us, dogs inherit genetic information from their doggie dad and mom. That genetic information determines how they look. Scientists have identified how many different genes get passed down through the generations to affect how dogs look. 19 авг. 2011 г.
Why do dog breeds look so different?
Unexpected variations in the looks of an animal that's been bred — unusual size, lack of a tail, curly hair or peculiar markings, for example — are the result of genetic mutations, which appear naturally "all the time," and are then perpetuated through generations by people who find the new trait appealing, according ...
Do all dogs look different?
This means that dog breeds differ drastically in their appearance and other characteristics, while most of their genomes are still very much alike. Comparing different breeds, most of their genomes indeed show only little differentiation.
How can genes lead to so many different looking dogs?
When dogs breed, the mother and father each randomly contribute one allele from each locus, giving each allele a 50% chance of being passed on to the pups. One of the alleles at each locus is dominant and determines the traits, like coat color, portrayed in the dog.
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