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Question

Modern evolution theory involves

A
Natural selection
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B
Genetic variations
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C
Isolation
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D
All of the above
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Solution

The correct option is C All of the above
  • The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioural traits.
  • Different characteristics tend to exist within any given population as a result of mutation, genetic recombination and other sources of genetic variation.
  • Evolution occurs when evolutionary processes such as natural selection and genetic drift act on this variation, resulting in certain characteristics becoming more common or rare within a population.
  • Hence, Modern evolution theory involves Natural selection, Genetic variations and Isolation.
  • So, the correct answer is 'All of the above'.

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