Evolution

Evolution

Of or pertaining to the change in the genetic composition of a population during successive generations, as a result of natural selection acting on the genetic variation among individuals, and resulting in the development of new species.

Industry: Archaeology

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Evolution

ecological species concept

Archaeology; Evolution

A concept of species, according to which a species is a set of organisms adapted to a particular, discrete set of resources (or "niche") in the environment. Compare with biological species concept, ...

cline

Archaeology; Evolution

A geographic gradient in the frequency of a gene, or in the average value of a character.

marsupial mammals

Archaeology; Evolution

A group (specifically, an order) of mammals whose females give birth to young at a very early stage of development. These newborns complete their development while sucking in a pouch, which is a ...

ecosystem

Archaeology; Evolution

A community of organisms interacting with a particular environment.

postzygotic isolation

Archaeology; Evolution

A form of reproductive isolation in which a zygote is successfully formed but then either fails to develop or develops into a sterile adult. Donkeys and horses are postzygotically isolated from one ...

land bridge

Archaeology; Evolution

A connection between two land masses, especially continents (e.g., the Bering land bridge linking Alaska and Siberia across the Bering Strait) that allows migration of plants and animals from one ...

phenetic species concept

Archaeology; Evolution

A concept of species according to which a species is a set of organisms that are phenotypically similar to one another. Compare with biological species concept, cladistic species concept, ecological ...