Biology theories

Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as genetic drift and natural selection act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. The process of evolution has given rise to biodiversity at every level of biological organisation.

scientific theory that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells

thumb|Charles Darwin in 1868

thumb|upright=1.8|Jean-Baptiste Lamarck|Lamarck argued, as part of his theory of [[heredity, that a blacksmith's sons inherit the strong muscles the blacksmith acquires from his work.]] Lamarckism, also known as Lamarckian inheritance or neo-Lamarckism, is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime. It is also called the inheritance of acquired characteristics or more recently soft inheritance. The idea is named after the French zoologist Jean-Baptiste Lamarck (1744–1829), who inc

biological hypothesis

early-20th-century scientific theory combining Darwinian evolution and Mendelian inheritance

prevailing theory about the cause of infectious diseases

theory in evolutionary biology

theory

thumb | right | alt=Monochrome photo of Charles Darwin, he appears to be an older middle aged man with a neutral expression, light skin, wrinkles under his deep set but fairly wide open eyes, and a chest length white beard extending up to his temples. He is wearing a hat with a rounded top, a medium width brim and a cloth band, his shoulders which are the only part of his body beyond head in frame seem are covered by a dark, apparently black, top of unclear cut. The background behind him is non-descript, possibly a plaster wall | Charles Darwin, whose [[On the Origin of Species introduced the

mutational change from one generation to the next

thumb|upright=1.5|Painting of Hugo de Vries, making a painting of an evening primrose, the plant which had apparently produced new forms by large mutations in his experiments, by [[Thérèse Schwartze, 1918]] Mutationism is one of several alternatives to evolution by natural selection that have existed both before and after the publication of Charles Darwin's 1859 book On the Origin of Species. In the theory, mutation was the source of novelty, creating new forms and new species, potentially instantaneously, in sudden jumps. This was envisaged as driving evolution, which was thought to be limite

Theory of the three divisions of the brain as developed by Paul D. MacLean

non-technical explanation of the basic concepts and principles of biological evolution

discussion of the meaning and usage of the terms evolution, fact and theory

set of theoretical concepts argued to be more comprehensive than the earlier modern synthesis of evolutionary biology that took place between 1918 and 1942

pseudoscientific belief that germs do not cause infectious disease

Concept in neurophysiology

theory in embryology

quantum interpretation of neuroscience

thumb|Multiomics aims to bring together various omics disciplines in [[biotechnology through cross-disciplinary computing and analysis.]]

the ability of elements that are structurally different to perform the same function or yield the same output