Adaptation
In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection. Ada...
Adaptation - Wikipedia
How Big Genitals Can Lead to Extinction, According to Science
Having big genitals can spell evolutionary disaster, say paleobiologists
Vanishing: The Earth's 6th mass extinction
We're entering the Earth's sixth era of extinction -- and it's the first time humans are to blame.
The extinction crisis is far worse than you think
Frogs, coral, elephants -- all are on the brink. Three quarters of species could disappear. Why is this happening? CNN explores an unprecedented global crisis.
Earth 'entering new extinction phase' - US study
The Earth has entered a "new period of extinction", a study by three US universities concludes, and humans could be among the first casualties.
Earth's sixth mass extinction has begun, new study confirms
Even if humans survive the planet will never be the same again. We are currently witnessing the start of a mass extinction event the likes of which have not been seen on Earth for at least 65 million ...
Evolution Abandoned Giant Pandas After They Switched To A Bamboo Diet
A giant panda may look like a vegetarian on the outside, but it definitely looks like a carnivore on the inside. A genetic analysis of 121 samples of panda poop finds that the community of microbes li...
As Temperatures Increase, So Will Extinction Rates
For some time, scientists have watched as creatures big and small have attempted to adapt to climate change. Some have shifted their ranges while others are breeding earlier. Now, a study finds that t...
Fitness (biology)
Fitness (often denoted in population genetics models) is a central idea in evolutionary theory. It can be defined either with respect to a genotype or to a phenotype in a given environment. In either...
Fitness (biology) - Wikipedia
History of evolutionary thought
Evolutionary thought, the conception that species change over time, has roots in antiquity, in the ideas of the ancient Greeks, Romans, and Chinese as well as in medieval Islamic science. With the beg...
History of evolutionary thought - Wikipedia
Vestigiality
Vestigiality refers to genetically determined structures or attributes that have apparently lost most or all of their ancestral function in a given species, but have been retained through evolution. A...
Vestigiality - Wikipedia
Fitness landscape
In evolutionary biology, fitness landscapes or adaptive landscapes (types of Evolutionary landscapes) are used to visualize the relationship between genotypes and reproductive success. It is assumed ...
Fitness landscape - Wikipedia
Extinction
In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last indivi...
Extinction - Wikipedia
Co-extinction
Coextinction and cothreatened refer to the phenomena of the loss or decline of a host species resulting in the loss or endangerment of other species that depend on it, potentially leading to cascading...
Acclimatization
Acclimatization (UK also acclimatisation; US also acclimation) is the process in which an individual organism adjusts to a gradual change in its environment (such as a change in temperature, humidity,...
Teleonomy
Teleonomy is the quality of apparent purposefulness and of goal-directedness of structures and functions in living organisms that derive from their evolutionary history, from adaptation for reproducti...
Carelia cochlea
†Carelia cochlea was a species of small, air-breathing, land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae and superfamily Cochlicopoidea. This species was endemic to the ...
Carelia cochlea - Wikipedia
Halleophyton
Halleophyton is a genus of extinct vascular plants of the Early Devonian (Pragian, around 410 million years ago). Fossils were first found in the Posongchong Formation of eastern Yunnan, China. The pl...
Adilophontes
Adilophontes is an extinct genus of large, mostly carnivorous bone-crushing mammals known as bear dogs, of the family Amphicyonidae, endemic to North America during the Oligocene to Miocene, living fr...
Paraceratherium
Paraceratherium is an extinct genus of hornless rhinoceros, and the largest terrestrial mammal that has ever existed. It lived from the early to late Oligocene epoch (34–23 million years ago); its rem...
Paraceratherium - Wikipedia
American lion
The American lion (Panthera leo atrox or P. atrox) – also known as the North American lion, Naegele’s giant jaguar or American cave lion – is an extinct lion of the family Felidae, endemic to North Am...
American lion - Wikipedia
Aarabia
Aarabia is a genus of extinct vascular plants found in central Morocco in outcrops of Early Devonian age (Emsian, around 408 to 393 million years ago). The leafless plant has a complex bran...
Aarabia - Wikipedia
Aurochs
The aurochs (/ˈɔːrɒks/ or /ˈaʊrɒks/; pl. aurochs, or rarely aurochsen, aurochses), also urus, ure (Bos primigenius), is an extinct type of large wild cattle that inhabited Europe, Asia and North Afric...
Aurochs - Wikipedia
Mendelian inheritance
Mendelian inheritance is inheritance of biological features that follows the laws proposed by Gregor Johann Mendel in 1865 and 1866 and re-discovered in 1900. It was initially very controversial. When...
Mendelian inheritance - Wikipedia
Arabian Ostrich
The Arabian ostrich (Struthio camelus syriacus) is an extinct subspecies of the ostrich which lived on the Arabian Peninsula and in the Near East until the mid-20th century.
Its range seems to ha...
Arabian Ostrich - Wikipedia
Natural selection
Natural selection is the gradual process by which heritable biological traits become either more or less common in a population as a function of the effect of inherited traits on the differential repr...
Natural selection - Wikipedia
Cambrian-Ordovician extinction event
The Cambrian–Ordovician extinction event occurred approximately 488 million years ago (m.y.a.). This early Phanerozoic Eon extinction event eliminated many brachiopods and conodonts, and severely re...
Lagostomus crassus
Lagostomus crassus is an extinct species of chinchilla that was native to Peru. It is known from a single skull found in southern Peru.
Dexteria
Dexteria floridana was a species of fairy shrimp in the family Chirocephalidae, the only species in the genus Dexteria. It was endemic to Florida, where it was known from a single pool, south of Gaine...
Acalypha rubrinervis
Acalypha rubrinervis (string tree or stringwood) is an extinct plant in the spurge family (Euphorbiaceae), from the island of Saint Helena in the South Atlantic Ocean. It was called string tree on acc...
Phyllospondyli
The Phyllospondyli is a now abandoned term for a series of small, poorly ossified fossils of labyrinthodont amphibians from the Paleozoic. The groups was proposed as an order on the basis if their ver...
Phyllospondyli - Wikipedia