Consider the mutant genes described in Section 6.2, Exercise 27, where a wild type gene has a 1.0% chance of mutating each time a cell divides and a mutant gene has a 1.0% chance of reverting to wild type. Suppose that four genes start out normal. Find the probability that there are two or more mutants after one division, after two divisions, and after a long time.
Find the probabilities of the above events.