The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, and remnants of their terrestrial origins can be found in the fact that they must breathe air from the surface; ... > more
In evolutionary biology, convergent evolution is the process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar ... > more
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 species. The development of the eye is considered by most ... > more
A gene is a locatable region of genomic sequence, corresponding to a unit of inheritance, which is associated with regulatory regions, transcribed regions and/or other functional sequence regions. ... > more
Charles Robert Darwin (12 February 1809 - 19 April 1882) was a British naturalist who achieved lasting fame by convincing the scientific community of the occurrence of evolution and proposing the ... > more
Rodentia is an order of mammals also known as rodents, characterised by two continuously-growing incisors in the upper and lower jaws which must be kept short by gnawing.
Forty-percent of mammal ... > more
Anthropology is the study of humanity. Anthropology has origins in the natural sciences, the humanities, and the social sciences.
Since the work of Franz Boas and Bronisław Malinowski in the ... > more
The Raphinae are a subfamily of extinct flightless birds colloquially called didines or didine birds. They inhabited the Mascarene Islands of Mauritius and Rodrigues, but became extinct through ... > more
Birds are bipedal, warm-blooded, oviparous vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. Birds range in size from the tiny hummingbirds to the huge ... > more
Prokaryotes are organisms without a cell nucleus, or indeed any other membrane-bound organelles, in most cases unicellular (in rare cases, multicellular). This set of characteristics is distinct from ... > more