Figure P18.8

Figure P18.8. Rate of increase of P (blue) and Q (purple) from low frequency plotted against the contribution from patch B, α. Polymorphism is protected when both are greater than 1. (A) Strong selection (as in Problem 18.9 iii)); (B) weak selection (as in Problem 18.9 v)); (C) weak selection and habitat preference (as in Problem 18.9 v)).