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evolution vocabulary emedley
evolution vocab
14
Biology
9th Grade
03/20/2013

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Term
overproduction
Definition
an excess of offspring are produced
Term
variation
Definition
not all individual sin a population are the same
Term
selection
Definition
some individuals are more successful than others
Term
adaptation
Definition
the population changes over time
Term
directional pressure
Definition
adaptations evolve in a single direction
Term
stabilizing pressure
Definition
adaptations stay constant due to competing pressures
Term
disruptive pressure
Definition
adaptations evolve in two directions
Term
Coevolution
Definition
evolution of two species, both influencing each other
Term
convergent evolution
Definition
Species look alike because they needed to adapt to similar conditions
Term
divergent evolution
Definition
species look alike because they share a common ancestor
Term
alternate theory of evolution produced by Lamarck
Definition
evolution due to use and disuse
Term
Malthus
Definition
author of theory that populations will always be under lots of pressure due to fast population growth
Term
uniformitarianism
Definition
theory by Lyell, describing how the Earth's features were formed slowly by gradual processes
Term
natural selection
Definition
the process in which populations change over time to become better adapted to their conditions
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