A black dog is bred with a brown dog,and all the puppies have patches of black and brown.The coat color alleles for black and brown are an example of

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Codominance occurs when both alleles for a trait are expressed equally in the phenotype of a heterozygous individual. In this case, both black and brown alleles are expressed, resulting in patches of both colors in the puppies. In incomplete dominance, the heterozygous phenotype is an intermediate between the two homozygous phenotypes (e.g. red and white flowers producing pink offspring). Multiple-allele inheritance involves more than two alleles determining a trait (e.g. blood type). Multifactorial inheritance involves environmental factors in addition to genetics (e.g. height). Polygenic inheritance involves multiple genes contributing to the same trait (e.g. skin color).

A Black Dog Is Bred with a Brown Dog,and All