Mechanisms of Microevolution Crossword Puzzle

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.