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biology vocab 13

vocab 13

TermDefinition
population a group of organisms of one species that interbreed and live in the same place at the same time
natural selection the process by which forms of life having traits that better enable them to adapt to specif pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than other of their kind,thus
adaptation the adjustment of change in behavior physiology, and structure of an organism to become more suited to an environment
reproductive isolation the conditions as physiological or behavioral differences or geographical barriers, that prevent potentially interbreeding populations from cross-fertilization
gradualism a proposed explanation in evolutionary biology stating that new species arise form the result of slight modifications(mutations and resulting phenotypic changes)over many generations
punctuated equilibrium pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change
paleontologist a scientist who studies fossils
vestigial structure remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species
homologous structure structures in different species that are similar because of common ancestry
divergence occurs when a group isolates elements of culture due to physical or human characteristics
speciation formation of new species
subspecies a taxonomic group that is a division of a species
Created by: morgan-opphile
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