Question

You have a purebred cocker spaniel. Your neighbor has a purebred greyhound.

If the genomes of these two dogs were compared, what types of differences are likely to be encountered?

Answer 1

Differences in the genomes of a purebred cocker spaniel and a purebred greyhound can be seen in genes controlling traits such as size, build, and coat color. These variations in the DNA sequences of genes account for the differences in physical characteristics between the two breeds.

Step-by-step explanation:

When comparing the genomes of a purebred cocker spaniel and a purebred greyhound, there are likely to be differences in the genes that control traits such as size, build, coat color, and other physical characteristics specific to each breed. These differences arise from variations in the DNA sequences of the genes.

For example, the gene responsible for determining coat color in dogs, called the MC1R gene, can have different variants. Different variants of this gene can result in coat colors like black, brown, or yellow.

So, the cocker spaniel and greyhound may have different versions of this gene, leading to different coat colors.

Additionally, there may be differences in other genes that control traits like ear shape, tail curl, or muscle development, which are specific to each breed. These variations in the genomes of different dog breeds contribute to their unique characteristics.