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Evidence of common descent of living organisms has been discovered by scientists researching in a variety of disciplines over many decades, demonstrating that all life on Earth comes from a single ancestor. This forms an important part of the evidence on which evolutionary theory rests, demonstrates that evolution does occur, and illustrates ...
A symbolic portrayal of human evolution, showing developmental stages as a matter of illustration. " Missing link " is a hypothetical or recently-discovered transitional fossil. It is often used in popular science and in the media for any new transitional form. The term originated to describe the hypothetical intermediate form in the ...
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
The multiregional hypothesis, multiregional evolution ( MRE ), or polycentric hypothesis, is a scientific model that provides an alternative explanation to the more widely accepted "out of Africa" model of monogenesis for the pattern of human evolution . Multiregional evolution holds that the human species first arose around two million years ...
Over time these evolutionary processes lead to formation of new species ( speciation ), changes within lineages ( anagenesis ), and loss of species ( extinction ). "Evolution" is also another name for evolutionary biology, the subfield of biology concerned with studying evolutionary processes that produced the diversity of life on Earth.
Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. [ 1] Assessment of the vestigiality must generally rely on comparison with homologous features in related species. The emergence of vestigiality occurs by ...
Alfred Russel Wallace OM FRS (8 January 1823 – 7 November 1913) was an English [1] naturalist, explorer, geographer, anthropologist, biologist and illustrator. [2] He independently conceived the theory of evolution through natural selection; his 1858 paper on the subject was published that year alongside extracts from Charles Darwin's earlier writings on the topic.
The aquatic ape hypothesis ( AAH ), also referred to as aquatic ape theory ( AAT) or the waterside hypothesis of human evolution, postulates that the ancestors of modern humans took a divergent evolutionary pathway from the other great apes by becoming adapted to a more aquatic habitat. [1] While the hypothesis has some popularity with the lay ...