Question

Modern evolution theory involves

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

Answer 1

Answer: (D)

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'.