Table 1.
Mutation Rate of each CGG Repeat Size categorized by Parental Origin
| Parental Origin,Repeat Size, andNo. and Race of Transmissionsa | No. of UnstableTransmissions (%)b | Overall μ(%)c |
| Maternal: | ||
| < 20: | … | … |
| 10 W | … | … |
| 20–29: | … | .27 |
| 291 W | 1 (.34) | … |
| 64 AA | … | … |
| 20 Other | … | … |
| 30–39: | … | .81 |
| 480 W | 4 (.84) | … |
| 103 AA | 1 (.97) | … |
| 37 Other | … | … |
| 40–49: | … | 2.34 |
| 106 W | 3 (2.83) | … |
| 18 AA | … | … |
| 4 Other | … | … |
| 50–54: | … | 9.52 |
| 21 W | 2 (9.52) | … |
| 55–59: | … | 14.29 |
| 7 W | 1 (14.29) | … |
| Paternal: | ||
| < 20: | … | … |
| 1 W | … | … |
| 20–29: | … | 3 |
| 84 W | 3 (3.57) | … |
| 7 AA | … | … |
| 9 Other | … | … |
| 30–39: | … | 3.03 |
| 113 W | 4 (3.54) | … |
| 11 AA | … | … |
| 8 Other | … | … |
| 40–49: | … | 7.69 |
| 31 W | 3 (9.68) | … |
| 3 AA | … | … |
| 5 Other | … | … |
| 50–54: | … | 11.11 |
| 9 W | 1 (11.11) | … |
| 55–59: | … | 54.55 |
| 11 W | 6 (54.55) | … |
a
AA = African American; W = white.
b
Data are the total number of unstable transmissions within one ethnic group. Ellipses indicate absence of unstable transmissions.
c
Percentage of unstable transmissions of all ethnic groups combined.