IB Evolution Objectives

adaptation

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Terms in this set (44)

an inherited characteristic that enhances an organism's ability to survive and reproduce in a particular environment

descent with modification; the idea that living species are descendants of ancestral species that were different from present-day ones; also the genetic changes in a population over generations

a preserved remnant or impression of an organism that lived in the past

artificial selection

the selective breeding of domesticated plants and animals to promote the occurrence of desirable traits

natural selection

a process in which organisms with certain inherited characteristics are more likely to survive and reproduce than are organisms with other characteristics

the irrevocable loss of a species

a scientist who studies fosssils

the chronicle of evolution over millions of years of geologic time engraved in the order in which fossils appear in rock strata

rock layers formed when new layers of sediment cover older ones and compress them

a group of individuals belonging to one species and living in the same geographic area