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This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Also called functionalism. The Darwinian view that many or most physiological and behavioral traits of organisms are adaptations that have evolved for specific functions or for specific reasons (as opposed to being byproducts of the evolution of other traits, consequences of biological constraints, or the result of random variation). adaptive radiation The simultaneous or near-simultaneous ...
Phylogenies showing the terminology used to describe different patterns of ancestral and derived character or trait states. [1]In phylogenetics, an autapomorphy is a distinctive feature, known as a derived trait, that is unique to a given taxon.
So the concept can be understood as well in terms of "a character newer than" (autapomorphy) and "a character older than" (plesiomorphy) the apomorphy: mammary glands are evolutionarily newer than vertebral column, so mammary glands are an autapomorphy if vertebral column is an apomorphy, but if mammary glands are the apomorphy being considered ...
The term pessimism derives from the Latin word pessimus, meaning 'the worst'.It was first used by Jesuit critics of Voltaire's 1759 novel Candide, ou l'Optimisme.Voltaire was satirizing the philosophy of Leibniz who maintained that this was the 'best (optimum) of all possible worlds'.
The Icelandic character laments the "wretched life of the world" and "the suffering and death of all the beings which compose it", with no respite or escape from such universal torment. [85]: 79 [76] Leopardi, through this character, rejects the idea that nature is benevolent or that wild animals live in a state of happiness and contentment.
The term is a piece of computer humor entered into the 1981 The Devil's DP Dictionary. [48] Anatidaephobia – the fictional fear that one is being watched by a duck. The word comes from the name of the family Anatidae, and was used in Gary Larson's The Far Side. [49] Anoraknophobia – a portmanteau of "anorak" and "arachnophobia".
In phylogenetics, a plesiomorphy ("near form") and symplesiomorphy are synonyms for an ancestral character shared by all members of a clade, which does not distinguish the clade from other clades. Plesiomorphy, symplesiomorphy, apomorphy, and synapomorphy all mean a trait shared between species because they share an ancestral species. [a]