chap. 13-1 Evolution
Terms in this set (11)
a change in the characterisitcs of a population from one generation to the next.
(modern def.) a change in allele frequency in a population over time.
a group of organisms of the same species that live in a specific (geographic) area and interbreed.
genetically similar organisms that can interbreed and produce fertile offspring.
the process by which individuals that have favorable variations and are better adapted to their environment will survive and reproduce more successfully than less well adapted individuals.
any genetically controlled characteristic of an organism that increases its fitness.
occurs when two populations have differences in courtship rituals or behaviors that keeps them from interbreeding.
occurs when two populations are separated physicallt by geographic barriers wuch as rivers, mountains, etc.
formation of new species.
a model of evolution in which gradual change over a long period of time leads to speciation (Darwinism).
accumulation of differences between 2 (or more) populations or species.
process in which one species gives rise to many species (occurs when there are many available niches).
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