Charles darwin and alfred russel wallace proposed

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Charles Darwin and Alfred Russel Wallace proposed (1858) a way of understanding the propagation and variety of traits. Followed 20 years of observations and reflection Evolution through Natural Selection Evolution through natural selection The basic description of the theory involves six steps, some of which are based on observation and others on reasonable conjecture. 1) Species fertile enough to quickly overpopulate their habitats. 2) The resources in any given habitat are finite. 3) There for, there must be intense competition between individuals of each species for the available resources. 4) Because of natural heritable variations within a species, it is reasonable that survival is in part influenced by genetic differences in abilities.
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5) Individuals that are more capable have a better chance of surviving long enough to reproduce. Their genetic attributes will be disproportionately represented in future generations. 6) Over long periods of time, such natural selection leads to evolutionary changes within population, and eventually to the evolution of new species. ‘survival of the fittest’ = ability to produce offspring
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  • Spring '13
  • none
  • DNA, Possible genotype, associated trait results

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