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Archaeology

The scientific study of physical remains, whether monuments, artifacts or relics of past human life, cultures or activities.

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Archaeology > Evolution

tunicate

Archaeology; Evolution

A group of simple chordates, including sea squirts (class Ascidacea) that live attached to rocks, and the salps (class Thaliacea) that float in the sea. Tunicates are small marine ...

fixed

Archaeology; Evolution

(1) In population genetics, a gene is "fixed" when it has a frequency of 100 percent. (2) In creationism, species are described as "fixed" in the sense that they are believed not ...

plasmid

Archaeology; Evolution

A genetic element that exists (or can exist) independently of the main DNA in the cell. In bacteria, plasmids can exist as small loops of DNA and be passed between cells ...

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 ...

mutation

Archaeology; Evolution

A change in genetic material that results from an error in replication of DNA. Mutations can be beneficial, harmful, or neutral.

typology

Archaeology; Evolution

(1) The definition of classificatory groups by phenetic similarity to a "type" specimen. A species, for example, might be defined as all individuals less than x phenetic units ...

prokaryote

Archaeology; Evolution

A cell without a distinct nucleus. Bacteria and some other simple organisms are prokaryotic. Compare with eukaryote. In classificatory terms, the group of all prokaryotes is ...