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Question 11.2.31: In Example 11.11, define f(i) to be the proportion of G genes......

In Example 11.11, define f(i) to be the proportion of G genes in state i. Show that f is a harmonic function (see Exercise 27). Why does this show that the probability of being absorbed in state (GG,GG) is equal to the proportion of G genes in the starting state? (See Exercise 17.)

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