The greyhound is a dog breed known for its amazing speed. This breed was produced by taking the fastest animals and breeding them together generation after generation. Though artificial, this is an example of . stabilizing selection disruptive selection overdominance directional selection underdominance

directional selection                                              

Explanation:

Directional selection: In population genetics, the term "directional selection" is also referred as "positive selection" and is described as a method of "natural selection" that encompasses a particular phenotype is being favored or dominated over any other types of phenotypes and leads the "allele frequency" to get molded with respect to time in the given phenotype's direction.

In the question above, the given statement signifies the "directional selection".

the first part is ocean

explanation:

answer; passive listening;