dizygotic
Adjective
Meaning
derived from two separately fertilized eggs
Source: WordNetSynonyms
Examples
dizygotic twins
Such evidence includes the familial clustering of cases, greater concordance in monozygotic compared with dizygotic twins and heritability of endocrine and metabolic features of PCOS.
Examining only male twin pairs, he found a 100% concordance rate for homosexuality among 37 monozygotic (MZ) twin pairs, compared to a 12%–42% concordance rate among 26 dizygotic (DZ) twin pairs, depending on definition.
The study concluded that the monozygotic co-twins would be more similar than dizygotic co-twins in change over time.
Twin studies reinforce this pattern: monozygotic (identical) twins raised separately are highly similar in IQ (0.74), more so than dizygotic (fraternal) twins raised together (0.6) and much more than adoptive siblings (~0.0).