Table 2.

Streamlining of Individual Based Solution

25: (- (* (* y y) y) (* (- (- x x) x) (+ x (* (+ 3 (- 1 (- (- x x) x))) x))))
21: (- (* (* y y) y) (* (- (- x x) x) (+ x (* (+ 3 (+ 1 x)) x))))	19: (- (* (* y y) y) (* (- (- x x) x) (+ x (* x (+ 4 x)))))
17: (+ (* (* y y) y) (* x (+ x (* x (+ 3 (+ x 1))))))	15: (+ (* (* y y) y) (* x (+ x (* x (+ 4 x)))))

Observed streamlining of genotypes for the phenotype of an individual based solution found in a simulation with μ = 0.03. After the arrival of a first individual based solution of length 25, the length of consecutive mutants is decreased after prolonged evolution. Examples are shown of two strains leading to a solution with length 15 and 17 respectively. Note that intermediate mutants are not necessarily shown.