describe any three ways in which individuals with a particular trait may increase in population?

 The different ways in which individuals with a particular trait may increase in a population are

1. Natural selection of some variants - Natural selection provide chances to certain. Variation that are suitable to changing environment.
2. Genetic drift - Migration of members of a small population also cause increase in individuals having particular trait. However, genetic drift does not provide survival advantage.

       3.Geographic isolation refers to a situation where a species, or a population of a species, becomes separated by a physical barrier (a lake, ocean, mountains, etc.), allowing each group to diverge along separate evolutionary paths