directional evolution
1Evolution (term) — Evolution is a term with many meanings. For instance, Merriam Webster lists biological evolution as one meaning out of a total of six.Evolution is not exclusively a term of biology. There are also evolutionary economics, evolution of languages,… …
2evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
3Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on …
4Evolution of the eye — The evolution of the eye has been a subject of significant study, as a distinctive example of a homologous organ present in a wide variety of taxa. The development of the eye is considered by some experts to be monophyletic; that is, all modern… …
5Evolution of cetaceans — The approximately 80 modern species in the order Cetacea. A phylogeny showing the …
6evolution — noun a) gradual directional change especially one leading to a more advanced or complex form; growth; development There are some examples of cultural evolution in birds and monkeys, but it is our own species that really shows what cultural… …
7Directional selection — Categories: Evolution stubsSelection …
8contemporary evolution — directional selection as human activities change ecosystems. In fisheries, size limits on catches restrict fishing to the larger specimens. In Atlantic cod, for example, this has led to maturity at smaller sizes and, since smaller fish produce… …
9Largest-scale trends in evolution — The history of life on Earth seems to show a clear trend; for example, it seems obvious that there is a trend towards increasing complexity in living organisms. More recent organisms, such as mammals, appear to be much more complex than older… …
10Sociocultural evolution — Cultural evolution redirects here. For gene culture coevolution, see Dual inheritance theory. Sociology …
