Railways PYQCBT 1 2016

RRB NTPC · Question 2

Which of the following is the idea that new species are formed from the sudden and unexpected emergence of alterations in their defining traits? A. Natural Selection B. Mutation C. Recombination D. Non-Random Mating

  1. C

  2. A

  3. B

  4. D

Show answer & explanation

Answer: (C) B

Explanation

Mutation theory (Hugo de Vries) says new species arise from sudden, large, heritable changes in traits, unlike Darwin's gradual natural selection.