Question

How did Darwin related the variations with a change in population characteristics of a species?

Answer 1

Dear student,

Darwin and wallace proposed that natural selection is the mechanism by which new species arise from pre existing ones. Natural selection states that there is "struggle for existence" within a population and variation exists within all population. The continuous competition between individuals for environmental resources creates a 'struggle for existence' and this struggle makes sure that certain organisms would fail to survive or reproduce. This would eliminate less suited organisms and better adapted organisms would survive and pass on their traits to next generation leading to evolution. Or in other simple words, If the environmental condition changes than the population which has adaptation in the form of mutation to adapt to changed environmental condition will be selected by nature and survive.

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