Question

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Q.Compare and contrast the theories of evolution proposed by Darwin and Hugo De Vries.


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Answer 1

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Here's the answer ➡️

DARWIN'S THEORY 》

▪This is based on natural selection.

▪Minor variations cause evolution.

▪Darwinian variations are small and directional.

▪Evolution is a gradual process.

HUNDO DE VRIES' THEORY 》

▪This is based on Mutations.

▪Mutations cause evolution.

▪Mutations are random and directionless.

▪Sudden Mutations cause evolution.

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Answer 2

Answer:

=>According to Hugo de Vries, new species arise due to single step large mutation whereas according to Darwin, evolution occurs gradually by the method of natural selection. Darwin believed that minor variations are the cause of the evolution and his theory is based on the natural selection.

=> Darwins theory stated that evolution is a gradual process. While De Vries stated that the process is sudden. differencebetween Darwin's theory of natural selection and De Vries mutation theory ? ... Darwins theory stated that evolution is a gradual process while De Vriesstated that the process is sudden.