Please help me!! Evolution question?!?

Question

Please define and give examples of the 4 forces of evolution

Answer 1

Natural selection: is the process by which the best-adapted individuals produce the most offspring, which in turn carry forward to their offspring the genes that gave their parents the upper edge.

Genetic drift: is a random process in which chance plays a role in deciding which gene variants (alleles) survive.

Gene flow: occurs when genes are carried from one population to another. Also called migration, an example of gene is when pollen gets blown to a region where it previously did not exist, transporting new genetic material to that population.

Mutations: are also random. Changes to an organism's DNA can impact all aspects of its life, from how it looks and behaves to its basic physiology.