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.
Twins participating in COTASS-2
| Zygosity | Number of Individual | Number of Twin Families |
|---|---|---|
| Monozygotic Males (MZM) | 533 | 295 |
| Dizygotic Males (DZM) | 366 | 215 |
| Monozygotic Females (MZF) | 730 | 397 |
| Dizygotic females (DZF) | 485 | 281 |
| Dizygotic Opposite Sex (DZOS) | 809 | 467 |
| Triplets | 11 | 5 |
| Zygosity missing | 1 | – |
Number of individuals in the twin groups is not twice the number of families due to missing data. Actual numbers of ‘complete pairs’ are not given since those differ per variable
