Q. Which of the following best describes natural selection as proposed by Darwin and Wallace?

[A] It is the process by which organisms acquire new genes through mutation alone.

[B] It is the evolutionary force that selects beneficial genetic variations, enabling better adaptation to the environment.

[C] It refers to sudden large-scale changes in species caused by geographic isolation.

[D] It means all members of a species survive equally regardless of genetic traits.

Answer: B
Notes:

Explanation: Natural selection is the mechanism by which individuals with advantageous genetic traits are more likely to survive, reproduce, and pass those traits to their offspring. It acts on existing genetic variations and favors adaptations that improve an organism’s fitness in its environment

Source- Shankar IAS

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