Imagine that you have two phylogenetic trees for the same group of organisms, constructed from the same set of traits. Microevolution A. Introduction Define and distinguish between macroevolution and microevolution. Briefly describe the four steps needed to determine whether or not microevolution has occurred in a natural population. Use your lecture notes from Lecture 3 to explain how each of these processes can lead to microevolution. There is no evidence that evolution is occurring now, in one or a few of our lifetimes.
All evolution is adaptive.
Although a pregnant woman develops a craving for pickles, her baby will not inherit a preference for pickles, because characteristics acquired during one's lifetime are not inheritable. An evolving species is one that is progressing toward perfection, toward its ideal form. Most organismal biologists consider evolution to be a fact. Do this first for African Americans Living in the U.S. today. Then do the same for Africans living in Central Africa.