Question

Choose the concepts defined by the Darwinian theory of evolution.

I. Branching descent
II. Adaptive radiation
III. Natural selection
IV. Saltation

• A. II and III
• B. I and III
• C. III and IV
• D. I and II

Answer 1

The correct option is B I and III

Darwinian theory of evolution is based on the following two key concepts:

Branching descent: Branching descent may be defined as the process by which new species originate from a single common descendant.

Natural selection: Natural selection may be defined as the process by which the organisms which are better adaptive to a particular kind of environment tends to survive, leading in the elimination of the organism less adaptive to that environment.