Question

What are the two basic factors of evolution?

Answer 1

Evolution:

1. The change in the features of any species over many generations is known as evolution.
2. Evolution depends on the natural selection process.
3. Darwin's theory of evolution states that evolution occurs through natural selection.

Two basic factors of evolution are:

Natural selection:

1. The gradual adaptation by any organism according to the environment in its surrounding is known as natural selection.
2. The organisms that can survive and reproduce with changing environmental conditions are selected by the nature.
3. The organisms that cannot survive are eliminated.

Variation:

1. The difference in characteristics of individuals in a population is known as variation.
2. Variations occur as a result of recombination and mutation.
3. Variations enable organisms to adapt to environmental conditions.