Science, asked by payal1221, 1 year ago

what is Darwin's theory of natural selection


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Answered by Anonymous
30

hey

Darwin's theory of natural selection states that nature selects organisms that have features favorable for their survival, while eliminating inferior species. Natural selection is a key to the origin of new species from the existing ones. The following article provides information about this theory.

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Answered by abhilash3600
9
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution , the change in the heritable trait characteristic of a population over generations. Charles Darwin  popularised the term "natural selection", contrasting it with artificial selection , which is intentional, whereas natural selection is not

Variation exists within all populations of organisms . This occurs partly because random mutations arise in the genome of an individual organism, and offspring can inherit such mutations. Throughout the lives of the individuals, their genomes interact with their environments to cause variations in traits. The environment of a genome includes the molecular biology in the cell, other cells, other individuals, populations, species, as well as the abiotic environment. Because individuals with certain variants of the trait tend to survive and reproduce more than individuals with other, less successful variants, the population evolves.



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