An intervening variable facilitates a better understanding of the relationship between the independent and dependent variables when the variables appear to not have a definite connection. They are studied by means of operational definitions and have no existence apart.
Difference between Microevolution and Macroevolution. â¢ Micro evolution refers to visible changes in a population of the same species over a period of time. â¢ Macroevolution is what evolution is as described by the theory of evolution by Darwin.
Answer: Microevolution is an uncontroversial, well-documented, naturally occurring biological phenomenon. It happens every day. It is the process whereby preexisting genetic information is rearranged, corrupted, and/or lost through sexual reproduction and/or genetic mutation producing relatively small-scale (âmicroâ) changes within a population.