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chptr 6 - evolution

QuestionAnswer
species a group of organisms whose members successsfully reproduce among themselves
evolution change in the hereditary features of a species over time
natural selection organisms with traits best suited to their environments are more likely to survive
variation the appearance of an inherited trait that makes an individual different from other members of the same species
gradualism the model that describes evolution as a slow change of one species to another new species
punctuated equilibrium this model shows that rapid evolution of species can come about by the mutation of just a few genes
primates the group of mammals to which monkeys, apes, & humans belong and which share several characteristics, such as opposable thumbs
hominid earliest humanlike primates; ate both meat and vegetables and walked upright on 2 feet
Homo sapiens our own human species; a hominid primate mammal; evolved 300,000 years ago
Created by: bward33
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