Discussion Post: Polymorphic Trait
o What is a polymorphic trait? Provide two examples of polymorphic traits in modern humans, and give one example of a monomorphic trait.
o Why is the incidence of sickle-cell anemia an excellent example of a "balanced polymorphism," in which two or more alleles are maintained by natural selection in a population?
o Why is the peppered moth an excellent example of directional selection?
o Some advice: while you will be using the book and internet for your answers, cite when needed, and make the posts your own. The temptation to plagiarize and copy will be especially high this week. Do not do it.
The response must include a reference list. One-inch margins, double-space, Using Times New Roman 12 pnt font and APA style of writing and citations.