U.S. flag

An official website of the United States government


Send to:

Choose Destination

Twins, Monozygotic

Two off-spring from the same PREGNANCY. They are from a single fertilized OVUM that split into two EMBRYOS. Such twins are usually genetically identical and of the same sex.

Year introduced: 1991(1975)

PubMed search builder options


Tree Number(s): M01.438.873.940

MeSH Unique ID: D014430

Entry Terms:

  • Monozygotic Twin
  • Monozygotic Twins
  • Twin, Monozygotic
  • Twins, Identical
  • Identical Twin
  • Identical Twins
  • Twin, Identical

Supplemental Content

Loading ...