Question

Which of the following postulates is related with neo-Darwinism?

• A. Mutations are believed to help form new species.
• B. It incorporates isolation as an essential component of evolution.
• C. It can explain the occurrence of unchanged forms over millions of years.
• D. All of the above.

Answer 1

The correct option is D All of the above.

Neo-Darwinism is the modern synthesis of Darwin's concept natural selection. The chief postulates of neo-Darwinism are:

• Gene mutation together with chromosome rearrangement possibly position effects occur at predictable rates provides basis of Darwinian variations needed to produce new species.
  
• Meiosis, crossing over, variation in fertilization are the major process of genetic and evolutionary variability.
  
• Natural selection operates and eliminates the less adapted species. The changes accumulate and over millions of years are sufficient to account for the evolution of a new species from the pre-existing species which may continue to exist side by side.