convergent evolution

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evolution

 [ev″o-lu´shun]
the process of development in which an organ or organism becomes more and more complex by the differentiation of its parts; a continuous and progressive change according to certain laws and by means of resident forces.
convergent evolution the development, in animals that are only distantly related, of similar structures or functions in adaptation to similar environments.

con·ver·gent ev·o·lu·tion

the evolutionary development of similar structures in two or more species, often widely separated phylogenetically, in response to similarities of environment; for example, the wing-like structures in insects, birds, and flying mammals.

convergent evolution

convergent evolution

the evolution of nonhomologous organs in distantly related species in response to similar environmental conditions. Although of different origin, the organs appear similar in function, shape, or form.

con·ver·gent ev·o·lu·tion

(kŏn-vĕr'jĕnt ev'ŏ-lū'shŭn)
The evolutionary development of similar structures in two or more species, often widely separated phylogenetically, in response to similarities of environment; for example, the wings in insects, birds, and flying mammals.

convergent evolution

1. The process in which phylogenetically distinct lineages acquire similar characteristics.
2. Evolutionary changes in which descendants resemble each other more closely than their progenitors did.

convergence

or

convergent evolution

or

parallelism

a form of evolution which results in unrelated organisms independently producing similarities of form, usually because they become adapted to living in similar types of environment. For example, fish and cetaceans have evolved similar streamlined body shapes and fins.

evolution

the process of development in which an organ or organism becomes more and more complex by the differentiation of its parts; a continuous and progressive change according to certain laws and by means of resident forces.

convergent evolution
the development, in animals that are only distantly related, of similar structures or functions in adaptation to similar environment.
divergent evolution
the development of different characteristics in animals that were closely related in response to being placed in different environments.
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