This report describes the typical weather at the Logan International Airport (Boston, Massachusetts, United States) weather station over the course of an average February. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Medical Definition of miscegenation. : a mixture of races; especially : marriage or cohabitation between a white person and a member of another race.
From Wikipedia, the free encyclopedia. For other uses, see Fixation. In population genetics, fixation is the change in a gene pool from a situation where there exists at least two variants of a particular gene (allele) to a situation where only one of the alleles remains.ixation can refer to a gene in general or particular nucleotide position in the DNA chain (locus). In the process of substitution, a previously non-existent allele arises by mutation and undergoes fixation by spreading through the population by random genetic drift and/or positive selection.