DIZYGOTIC TWINS (DZ TWINS) By N., Sam M.S. - 28 Twins that have developed from two separate and eggs fertilised by separate sperm. Also called fraternal twins.See twin studies. DIZYGOTIC TWINS (DZ TWINS): "Dizygotic twins are fraternal twins." Related Psychology Terms TWIN STUDIES HOMOSEXUALITY (ETIOLOGY AND THERAPY) CHILD PSYCHIATRY CONCORDANCE IN TWINS MANIC-DEPRESSIVE REACTION (ETIOLOGY) GESELL, ARNOLD LUCIUS (1880- 1961) CLINICAL PSYCHOLOGY INFERTTLITY SCHOLASTIC APTITUDE TESTS EPILEPSY (Etiology and Therapy) Cite this page: N., Sam M.S., "DIZYGOTIC TWINS (DZ TWINS)," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/dizygotic-twins-dz-twins/ (accessed July 2, 2022).