Figure 4.—

The effect of sequence divergence on homologous recombination between direct repeats. The normalized recombination rate (y-axis) is calculated from the normalized number of spots per seedling (relative to the zero-mismatch construct) as a function of divergence between the two repeats (x-axis). Sequence divergence is expressed as the number of mismatches in the 618-bp repeat (# mismatches) or as the percentage of mismatches (% divergence). The different segments within the repeats are shown as circles, squares, and triangles for segments A, B, and C, respectively (see Figure 2). Bars represent 1.96 SE.