The most prominent disadvantage of artificially selected species is that they are very susceptible to disease. Since certain traits are bred for, variation within the species is greatly diminished, causing them to become... More »

One advantage of artificial selection, a process by which humans control the development of a plant or animal by choosing which traits to emphasize during breeding, is that it allows for an emphasis on certain beneficial... More »

According to the Annenberg Foundation, examples of artificial selection include the breeding of thoroughbred racehorses, and the breeding of animals used for meat, such as domesticated cows, pigs, sheep and chickens. Oth... More »

Recombinant DNA techniques allow certain genes to be directly transplanted from one organism into distantly related species, which has the effect of imbuing the recipient organism with a new trait such as resistance to c... More » Science Biology Molecular Biology & DNA

Advantages of hybridization include passing along favorable traits and prolonging the survival of a threatened or endangered species, but a disadvantage is that hybrid animals have more difficulty finding mates and succe... More »

Mate selectivity, movement of individuals between populations, small populations, mutations and natural selection can all disrupt genetic equilibrium. In the absence of these factors, the frequencies of genetic traits in... More » Science Biology Molecular Biology & DNA

Disruptive selection tends to increase genetic variation in populations, according to It is the opposite of stabilizing selection, which tends to drive a population toward a mean genotype and eliminate outlier... More »