![]() ![]() This basic model of evolution has since been further refined, and the role of genetic drift and sexual selection in the evolution of populations has been recognized. Thesaurus: synonyms and antonyms of permanently in English permanently Thesaurus > for a very. The presenters latest escapade was on the appropriately named 'Road of Death'. In twentieth century, the development of the the science of genetics helped explain the origin of the variation of the traits between individual organisms and the way in which they are passed from generation to generation. The offspring then inherit the beneficial traits, and over time the adaptive trait spreads through the population. Some of these traits confer fitness-they allow the individual organism that possesses them to survive in their environment better than other individuals who do not possess them and to leave more offspring. Darwin observed there is a certain amount of variation of traits or characteristics among the different individuals belonging to a population. Fast accurate Synonyms Fast replaced sound accurate Definitions for Fast (adjective) moving, proceeding, or acting with great speed (adjective) firm in. ![]() The modern understanding of the origins of species is based on the theories of Charles Darwin combined with a modern knowledge of genetics based on the work of Gregor Mendel. The process by which species of organisms arise from earlier life forms and undergo change over time through natural selection. ![]()
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