What is evolution? Why is evolution referred to as a theory?
1. Evolution is defined as “the change in the allele frequency in a population”. Or in simpler terms, the change in the heritable traits in a population (such as a species) over time. Or in even simpler terms … *evolution is change* (but change in a *species* over time, not an individual. However, there is also something called the “theory of evolution” (or TOE). This is the theory that explains two things: (1) how that process of *change* described in the previous paragraph occurs in nature; and (2) how that same process explains the origins of all species on the planet. 2. It is referred to as a ‘theory’ for the same reason we refer to the theory of gravity, the atomic theory of matter, the plate tectonics theory of geology, the germ theory of disease, the heliocentric theory of the solar system (that the earth moves around the sun, which replaced the geocentric theory), the big bang theory, the theory of relativity, etc. etc. etc. … … Namely, because in science, the word “theo
