environmental alleles
71Twin study — Twin studies are one of a family of designs in behavior genetics which aid the study of individual differences by highlighting the role of environmental and genetic causes on behavior. Twins are invaluable for studying these important questions… …
72Genetic assimilation — Note: Genetic assimilation is sometimes used to describe eventual extinction of a natural species as massive pollen flow occurs from another related species and the older crop becomes more like the new crop.… …
73primate — primatal, adj., n. primatial /pruy may sheuhl/, primatical /pruy mat i keuhl/, adj. /pruy mayt/ or, esp. for 1, /pruy mit/, n. 1. Eccles. an archbishop or bishop ranking first among the bishops of a province or country. 2. any of various… …
74Human evolution — This article is about the divergence of Homo sapiens from other species. For a complete timeline of human evolution, see Timeline of human evolution. Reconstruction of Homo heidelbergensis which may be the direct ancestor of both Homo… …
75Insulin — This article is about the insulin protein. For uses of insulin in treating diabetes, see insulin therapy. Not to be confused with inulin. Insulin Computer generated image of six insulin molecules assembled in a hexamer, highlighting the threefold …
76Huntington's disease — Classification and external resources A microscope image of …
77Genetic diversity — is a level of biodiversity that refers to the total number of genetic characteristics in the genetic makeup of a species. It is distinguished from genetic variability, which describes the tendency of genetic characteristics to vary.The academic… …
78Group selection — In evolutionary biology, group selection refers to the idea that alleles can become fixed or spread in a population because of the benefits they bestow on groups, regardless of the alleles effect on the fitness of individuals within that group.… …
79HLA-B — (major histocompatibility complex, class I, B) is a human gene that provides instructions for making a protein that plays a critical role in the immune system. HLA B is part of a family of genes called the human leukocyte antigen (HLA) complex.… …
80Extinction — [ thumb|The Dodo, shown here in a 1651 illustration by Jan Savery, is an often cited example of modern extinction.cite book | last = Diamond | first = Jared | authorlink = Jared Diamond | title = Guns, Germs, and Steel | publisher = date = 1999|… …
