Question

match the following 1. darwins first principal

Answer 1

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$\bold{\longmapsto}$In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

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Answer 2

Answer:

Origin of Species, published on 24 November 1859, is a work of scientific literature by Charles Darwin which is considered to be the foundation of evolutionary biology.

Lamarck gives use and disuse theory which states that when certain organs become specially developed as a result of some environmental need, then that state of development is hereditary and can be passed on to next generations.

Hugo de Vries gives mutation theory which states that new species are not formed by continuous variations but by sudden appearance of variations, which he named as mutations. Hugo de Vries stated that mutations are heritable and persist in successive generations.

Origin of life is given by Oparin Haldane. According to their theory, life evolved in the oceans during a period when the atmosphere was reducing - containing H$$_2$$, H$$_2$$O, NH$$_3$$, CH$$_4$$ and CO$$_2$$, but no free O$$_2$$.