What term is used to describe a group of organisms that are homozygous for certain traits?

The term "pure strain" refers to a group of organisms that are homozygous for certain traits, meaning they possess two identical alleles for a specific gene. This genetic uniformity allows for the expression of consistent traits within the group and is often desirable in breeding practices, research, and genetic studies because it ensures that the traits of interest will be reliably passed on to the next generation. Pure strains are utilized in agriculture, laboratory experiments, and various biotechnological applications to maintain specific characteristics without the introduction of variability that could come from mixing different genetic lines.