Table 1.
Differences between relatedness coefficients estimated using TrioML in COANCESTRY and true rxy for simulated dyads in six relationship categories. Simulated genotypes of dyads were based on the Long Island and Zealandia microsatellite marker sets
| Allele frequencies used | True relationship | Actual rxy | TrioML mean estimated rxy (±95% CIs) | Wilcoxon V | P | Coefficient of variation |
|---|---|---|---|---|---|---|
| Long Island | Parent–offspring | 0.5 | 0.48 (±0.02) | 1059 | NS | 20% |
| Full siblings | 0.5 | 0.48 (±0.03) | 2116 | NS | 31% | |
| Half siblings | 0.25 | 0.25 (±0.04) | 2412 | NS | 70% | |
| First cousins/avuncular | 0.125 | 0.21 (±0.04) | 1603 | *** | 89% | |
| Second cousins | 0.01325 | 0.14 (±0.03) | 1028 | *** | 117% | |
| Unrelated | 0 | 0.15 (±0.04) | 1891 | *** | 124% | |
| Zealandia | Parent-offspring | 0.5 | 0.47 (±0.02) | 914 | ** | 23% |
| Full siblings | 0.5 | 0.46 (±0.03) | 2371 | * | 37% | |
| Half siblings | 0.25 | 0.25 (±0.04) | 2490 | NS | 72% | |
| First cousins/avuncular | 0.125 | 0.16 (±0.03) | 2145 | NS | 98% | |
| Second cousins | 0.01325 | 0.13 (±0.03) | 1031 | *** | 115% | |
| Unrelated | 0 | 0.08 (±0.02) | 2145 | *** | 144% |
*
= P < 0.05.
**
= P < 0.01.
***
= P < 0.001. NS = Not significant.