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

tuberculosis

Archaeology; Evolution

An infection of the lungs, accompanied by fever and a loss of appetite, caused by the bacillus Mycobacterium tuberculosis.

heterozygote

Archaeology; Evolution

An individual having two different alleles at a genetic locus. Compare with homozygote.

homozygote

Archaeology; Evolution

An individual having two copies of the same allele at a genetic locus. Also sometimes applied to larger genetic entities, such as a whole chromosome; a homozygote is then an individual having two ...

polyploid

Archaeology; Evolution

An individual containing more than two sets of genes and chromosomes.

reinforcement

Archaeology; Evolution

An increase in reproductive isolation between incipient species by natural selection. Natural selection can directly favor only an increase in prezygotic isolation; reinforcement therefore amounts to ...

species

Archaeology; Evolution

An important classificatory category, which can be variously defined by the biological species concept, cladistic species concept, ecological species concept, phenetic species concept, and ...

belemnite

Archaeology; Evolution

An extinct marine invertebrate that was related to squid, octopi, and chambered nautiluses. We know from the fossil record that belemnites were common in the Jurassic period and had bullet-shaped ...