Review Article

Evolvability and Speed of Evolutionary Algorithms in Light of Recent Developments in Biology

Figure 2

Two common modes of gene duplication. (a) Unequal crossover, which results in a recombination event in which the two recombining sites lie at nonidentical locations in the two parental DNA molecules. (b) Retroposition, which occurs when a message RNA (mRNA) is retrotranscribed to complementary DNA (cDNA) and then inserted into the genome. Squares represent exons and bold lines represent introns. (Adapted from Zhang [139].)
568375.fig.002a
(a)
568375.fig.002b
(b)