| − | '''Dysgenics''' is the study of factors producing the accumulation and continuation of defective or disadvantageous [[gene]]s and traits in the offspring of a specific population or species. | + | '''Dysgenics''' is the study of factors producing the accumulation and continuation of defective or disadvantageous [[gene]]s and traits in the offspring of a specific population or species.<ref>[http://www.dictionary.com/browse/dysgenics Dysgenics]</ref> |