Genetic research, in conjunction with epidemiological evidence, reveals which genes cause humans to be predisposed to hereditary problems such as birth defects, cancer and heart disease. By altering an individual’s DNA composition, scientists may be able to correct abnormal genetic traits. With further exploration, human genetic research has the potential to eliminate cancer and birth defects before birth.
Some scientists now study DNA in animals for the supposed benefit of science, wasting time and money on irrelevant research. This money would be better spent on studying human genetics.