No, all labs do not carry genes for all lab colors.
Black is dominant to chocolate, so a black dog might be black with a hidden chocolate gene (represented Bb) or with two black genes (BB). Only...
Do you mean do they have to have babies that are yellow labs? If you do, then it depends on if the parents are different breeds from each other. Then the pups will be a mix.
how do you think they...
Black Labs=Black puppies Brown Labs=Brown Puppies so Yellow Labs=Yellow Puppies This means that you cant have yellow puppies from to black labs, if you had a yellow and a black it is more than likely...