Describe briefly four ways in which individuals with a particular trait may increase in population.
The individuals with a particular trait will increase in number if the trait provides:
More Food: The trait helps in obtaining more food that leads to increased growth and reproduction.
Useful Variations: The trait helps the individuals to adapt to environment and achieve greater success in struggle for existence.
Genetic Drift: It causes genetic fixation of a trait which, therefore, occurs, in whole of the progeny.
Differential Reproduction: The trait gives extra benefit to the individuals in survival and reproduction.