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

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 ...

Virus

Archaeology; Evolution

A kind of intracellular parasite that can replicate only inside a living cell. In its dispersal stage between host cells, a virus consists of nucleic acid that codes for a small number of genes, ...

Notochord

Archaeology; Evolution

A flexible skeletal rod running the length of the body in the embryos of the chordates (including the vertebrates). In some simpler types, such as sea-squirts, only the free-swimming larva has a ...

Pyrimidine

Archaeology; Evolution

A kind of base. In DNA, cytosine (C) and thymine (T) are pyrimidines. In RNA, cytosine (C) and uracil (U) are pyrimidines.

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 ...