Search results
Results from the WOW.Com Content Network
The tree of life or universal tree of life is a metaphor, conceptual model, and research tool used to explore the evolution of life and describe the relationships between organisms, both living and extinct, as described in a famous passage in Charles Darwin's On the Origin of Species (1859). [1]
Modern evolutionary theory continues to develop. Darwin's theory of evolution by natural selection, with its tree-like model of branching common descent, has become the unifying theory of the life sciences. The theory explains the diversity of living organisms and their adaptation to the environment.
The presenter, David Attenborough, outlines the development of the theory by Darwin through his observations of animals and plants in nature and in the domesticated state, visiting sites important in Darwin's own life, including Down House, Cambridge University and the Natural History Museum, and using archive footage from Attenborough's many ...
Charles Darwin in 1868. Darwinism is a term used to describe a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others. The theory states that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.
Priceless notebooks belonging to Charles Darwin have been mysteriously returned to Cambridge University more than 20 years after they went missing.
Darwin's theory, originally called descent with modification is known contemporarily as Darwinism or Darwinian theory. Unlike Lamarck, Darwin proposed common descent and a branching tree of life , meaning that two very different species could share a common ancestor.
Charles Darwin was probably right when he suggested all life on Earth started in a “primordial soup.” Scientists continue to find evidence of the theory.
A tree of life, like this one from Charles Darwin's notebooks c. July 1837, implies a single common ancestor at its root (labelled "1"). A phylogenetic tree directly portrays the idea of evolution by descent from a single ancestor. [3] An early tree of life was sketched by Jean-Baptiste Lamarck in his Philosophie zoologique in 1809.