1. Health
You can opt-out at any time. Please refer to our privacy policy for contact information.



Updated March 27, 2007

Definition: A type of twins derived from a single (mono) egg (zygote). Monozygotic twins form when a single fertilized egg splits into two embryos. Because the twins share the same DNA set, they tend to have similar features.
Also Known As: identical twins
Common Misspellings: monozigotic
Related Terms

©2014 About.com. All rights reserved.