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. 2002 Jan 22;99(2):809–814. doi: 10.1073/pnas.022240299

Table 2.

Homologous and nonhomologous recombination

Crossover type Structural innovation
No new structure
Total
2/2 1/1 1/2 0/1 0/2
Homologous 18 1,753 1,458 108,714 313,520 469,020
0.00384% 0.374% 0.311% 23.2% 66.8% 100%
(0.00423%) (0.412%) (0.343%) (25.6%) (73.7%)
Nonhomologous 2,429,718 36,294,731 555,014 12,707,944 31,356,742 301,806,870
0.805% 12.0% 0.184% 4.2% 10.4% 100%
(2.92%) (43.5%) (0.666%) (15.2%) (37.6%)

Numbers of crossover events that result in at least one of the two offspring sequences being viable (third and sixth rows) are classified by a crossover event's number of viable offspring (denominator in each fraction) and the number of which that encode for structures different from either parents' (numerator). Percentages without parentheses are relative to the total number of all possible crossover events (last column). Percentages in parentheses are relative to the total number of homologous or nonhomologous crossover events that have at least one viable offspring.