Biology

Biology

A natural science concerned with the study of life or living matter in all its forms and phenomena, especially in relation to their origin, growth, reproduction, structure, behaviour and evolution.

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Biology > Genetics

ontogeny

Biology; Genetics

The growth of an organism through all its developmental stages (embryonic stage through death).

cladogenesis

Biology; Genetics

The development of a new clade; the splitting of a single lineage into two distinct lineages; speciation.

cladogram

Biology; Genetics

A diagram, resulting from a cladistic analysis, which depicts a hypothetical branching sequence of lineages leading to the taxa under consideration. The points of branching within ...

convergence

Biology; Genetics

Similarities which have arisen independently in two or more organisms that are not closely related. Contrast with homology.

crown group

Biology; Genetics

All the taxa descended from a major cladogenesis event, recognized by possessing the clade's synapomorphy. See: stem group.

derived

Biology; Genetics

Refers to a character or feature found within a single lineage of a larger group; it is not shared with all organisms in the larger group. Derived characters are used to infer ...