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.
Expected correlations for genetic and environmental effects according to family cluster
| Type of effect (component) | Sibling pairs joined by | Successive births joined by | |||||
|---|---|---|---|---|---|---|---|
| Sisters | Brothers | Mixed | Couple | Mother | Father | ||
| Maternal genetic effects (Mg) | 0.5 | 0 | 0 | 1 | 1 | 0 | |
| Fetal genetic effects (F) | 0.125 | 0.125 | 0.125 | 0.5 | 0.25 | 0.25 | |
| Maternal environment (Me) | 0 | 0 | 0 | 1 | 1 | 0 | |
| Couple environment (C) | 0 | 0 | 0 | 1 | 0 | 0 | |
| Non-shared environment (E) | 0 | 0 | 0 | 0 | 0 | 0 | |
