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Evolution Vocabulary

Vocabulary for unit 5 - Evolution

TermDefinition
Evolution Any change in the heritable traits within a population across generations
Variation is the difference in the physical traits of an individual from other individuals in the group to which it belongs.
Natural Selection is the process by which organisms that are better adapted to their environment survive and reproduce more successfully than less well-adapted organisms.
Artificial Selection the human practice pf breeding animals or plants that have certain desired traits
Adaptation is a feature that allows an organisms to be better able to survive and reproduce in it's environment
DNA A Molecule that contains the instructions that tell a cell what to do; contains genetic evidence for evolution.
Fossils The remains or traces of once-living organisms; provides fossil evidence for evolution int he fossil record.
Vestigial organs an organ that was once useful in an animal's evolutionary past, but is now useless or very close to useless; Vestigial organs indicate that a structure has changed over time, providing structural evidence for evolution.
Embryo an unborn (or unhatched) animal or human young in its earliest phases of growth and development. Embryos of many different kinds of animals look very similar and it is often difficult to tell them apart. Provides embryological evidence for evolution.
Created by: amy.jensen