Which of the following are the two key concepts of Darwinian theory of evolution?

Options

A. Genetic drift and mutation
B. Adaptive radiation and homology
C. Mutation and natural selection.
D. Branching descent and natural selection

Answer

D

Explanation

According to Darwin's theory of evolution, nature selects the fittest. Fitness is based on characteristics which are inherited. Therefore, there must be a genetic basis for getting selected and to evolve. Some organism are better adapted to survive in an otherwise hostile environment. Adaptative ability is inherited. Fitness is the end result of the ability to adapt and get selected by nature. Therefore. brancing descent (inheritance) and natural selection are the two key concepts of Darwin's theory of evolution.