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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 »

www.reference.com Science Biology Molecular Biology & DNA

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 »

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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 »

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

www.reference.com Science Biology Molecular Biology & DNA

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 »

www.reference.com Science Biology Molecular Biology & DNA

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 »

www.reference.com Science Biology Molecular Biology & DNA

Genetic equilibrium is the stabilization of genetic mutation within a species. The concept comes from the Hardy-Weinberg principle, and it serves as the measurement for evolutionary change. More »

www.reference.com Science Biology Molecular Biology & DNA