Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
IBD probabilities k0, k1, and k2 for defined relationships. 2nd degree relationships include half-siblings, uncle-nephew, and grandparent-grandchild.
| Relationship | k0 | k1 | k2 |
|---|---|---|---|
| Self or identical twin | 0 | 0 | 1 |
| Unrelated | 1 | 0 | 0 |
| Parent-Child | 0 | 1 | 0 |
| Full Sibilings | 0.25 | 0.5 | 0.25 |
| 2nd Degree | 0.5 | 0.5 | 0 |
| Cousin | 0.75 | 0.25 | 0 |
