Mechanisms of Microevolution Crossword Puzzle

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QUESTIONS LIST: mutation : ultimate source of all variation, natural selection : a form of selection in which favorable phenotypes survive to reproduce more than individuals with different phenotypes, adaptive evolution : better match of organisms and environment, nonrandom mating : mechanisms where individuals are more likely to mate with individuals that possess a specific phenotype, gene flow : the transfer of trait in or out of a population, immigration : traits move into the population from elsewhere, emigration : traits move out of the population to elsewhere, genetic drift : any change in allele, or genotype, frequencies in a population due to chance (random events), assortative : type of non-random mating in which individuals mate with similar (positive) or dissimilar (negative) individuals in a population, inbreeding : mating of two genetically similar relatives, self fertilization : a special form of inbreeding in which the organism fertilizes itself, fixation : there is only one allele for a gene locus, extinction : a previous allele for a gene locus is lost, bottleneck : a sudden change in environment drastically reduces size of population, surviving alleles result of chance alone, founder : a few individuals become isolated from larger population and a smaller group establishes a new population.