Figure 28.21 - The probability that a gene will leave no descendants, Q, increases toward 1 if its average fitness is not greater than 1 (k = 0.8, 1).

Figure 28.21. The probability that a gene will leave no descendants, Q, increases toward 1 if its average fitness is not greater than 1 ( = 0.8, 1). If the fitness is greater than 1, then the probability of loss converges to a value less than 1. For fitness = 1.2, Q tends to 0.68, so that there is a 32% chance that the gene leaves some descendants.

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