Question

The theory of natural selection of Darwin to explain organic evolution was based on

• A. Modification in organs through use and disuse
• B. Probability of reproduction, struggle for existence and survival of the fittest
• C. Inheritance of acquired characters
• D. Appearance of sudden large variations, then inheritance and survival of those not having these variations

Answer 1

Answer: (B)

Probability of reproduction, struggle for existence and survival of the fittest

Theory of Natural Selection was proposed by Charles Darwin. Darwin insisted that in a population, organisms with heritable traits that favour survival and reproduction will increase their frequency over the generations but the carrying capacity of the environment is limited. Hence, nature selects the best-suited organisms that have a greater chance to become parents for the next generation. There is a struggle among the organisms for existence and the fittest organism survives.

Thus, the correct answer is option B.