Mention Darwin's two major contributions to evolutionary ideas.
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Answer:
Explanation:
Darwin’s two major contributions to evolutionary ideas
Darwin stated that evolution changes with time and is a slow and gradual process.
Darwin in his theory of evolution proved that natural selection takes place through variation, inheritance and depends on the rate of growth of population and differential survival and reproduction.
He proved that inheritable phenotypic variations exist among each individual.
He stated that new species can arise if reproductive isolation takes place.
He strongly suggested that the individuals who can survive environmental changes are those who are with inherited traits.
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Answer:
Darwin's theory consisted of two main points; 1) diverse groups of animals evolve from one or a few common ancestors; 2) the mechanism by which this evolution takes place is natural selection. This SparkNote will first take a look at Origin of the Species, and then more closely examine Darwin's theories.