Common descent
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Common descent
A group of organisms is said to have common descent if they have a common ancestor. In biology, the theory of universal common descent proposes that all organisms on Earth are descended from a common ancestor or ancestral gene pool.
Common Descent Can Be Tested Independently of Mechanistic Theories ...
Main article: Common descent
A group of organisms is said to have common descent if they have a common ancestor. All existing organisms on Earth are descended from a common ancestor or ancestral gene pool.
^ Mayr, The Growth of Biological Thought, chapter 10: "Darwin's evidence for evolution and common descent"; and chapter 11: "The causation of evolution: natural selection"; Larson, Evolution, chapter 3
^ Mazzarello, P (1999).
Fossil evidence supports the common descent hypothesis; fossils can be linked over time because they reveal a similarity in form, despite observed changes.
Darwinism Theory of evolution emphasizing common descent of all living organisms, gradual change, multiplication of species and natural selection.
1. (Science: ethnology) A part, or division, of the people of the earth, distinguished from the rest by common descent, language, or institutions; a race; a stock. All nations, and kindreds, and people, and tongues. (rev. Vii. 9) ...
His writings on both botany and zoology contained many comments that suggested the possibility of common descent based on changes undergone by animals during development, artificial selection by humans, and the presence of vestigial organs.
 See also: Origin, Species, Organ, Life, Evolution
  
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