Table 1.
Inbreeding group | N (both parents and at least one grandparent known) | % of inbred | N (all 4 grandparents known) | % of inbred |
---|---|---|---|---|
>0.25 | 0 | 0.0 | 0 | 0.0 |
0.25 | 9 | 2.2 | 2 | 0.6 |
<0.25>0.125 | 3 | 0.7 | 3 | 0.9 |
0.125 | 24 | 5.9 | 23 | 6.6 |
<0.125>0.0625 | 9 | 2.2 | 8 | 2.3 |
0.0625 | 34 | 8.4 | 28 | 8.1 |
<0.0625>0.03125 | 31 | 7.7 | 27 | 7.8 |
0.03125 | 46 | 11.4 | 40 | 11.6 |
<0.03125>0.015625 | 23 | 5.7 | 21 | 6.1 |
0.015625 | 56 | 13.8 | 45 | 13.0 |
<0.015625<0.0078125 | 28 | 6.9 | 26 | 7.5 |
0.0078125 | 47 | 11.6 | 43 | 12.4 |
<0.0078125>0 | 95 | 23.5 | 80 | 23.1 |
Total with F>0 | 405 | 100 | 346 | 100 |
Total with F = 0 | 1443 | 475 |
Inbreeding events are split into well known groups (e.g. 0.25 - parent-offspring, full-siblings etc; 0.125 - half-siblings, uncle-niece etc; 0.0625 - first cousin, half-uncle-niece etc; 0.03125 - first cousins once removed, half-first cousins etc; 0.015625 - second cousins, first cousins twice removed etc; 0.0078125 - second cousins once removed, half-second cousins etc.) and those that require more complex relationships. The relative frequency of types of inbreeding event is similar when considering datasets of individuals with both parents and at least one grandparent known or with all four grandparents known.