The mother assumed that she had given birth to fraternal twins (dizygotic, from two eggs) and not "identical" ones (monozygotic, two embryos developed from a single fertilized egg). ❋ David Cesarini (2011)
In contrast, we present here evidence for cognitive “specialist genes”: monozygotic twins are more similar than dizygotic twins in the specific cognitive ability of face perception. ❋ Unknown (2010)
In this article, we report the results of two independently conceived and executed studies of monozygotic and dizygotic twins, one in Sweden and one in the United States. ❋ Unknown (2008)
One thousand and seventy three pairs of adult monozygotic (MZ) twins and 895 pairs of same sex adult dizygotic (DZ) twins from the United Kingdom (UK) completed the Humor Styles Questionnaire: a 32-item measure which assesses two positive and two negative styles of humor. ❋ Unknown (2008)
Each of three measures of face-specific processing was heritable, i.e., more correlated in monozygotic than dizygotic twins: face-specific recognition ability, the face-inversion effect [2], and the composite-face effect [3]. ❋ Unknown (2010)
A study published in the current issue of Journal of Personality studied adult male monozygotic (MZ) and dizygotic (DZ) twins to find that difference in religiousness are influenced by both genes and environment. ❋ Unknown (2009)
In most twin studies, the twins themselves (or their parents) report "twin type" - i.e., whether the twins are identical (monozygotic/MZ) or fraternal (dizygotic/DZ). ❋ Unknown (2009)
Twin studies make the following assumptions: Monozygotic, (identical), twins share all their genes and their environment but dizygotic, (fraternal), twins share half their genes and their environment. ❋ Downes, Stephen M. (2009)
December 20th, 2006 at 8: 32 am dizygotic* michelle Says: ❋ Unknown (2006)
Recent findings have shown, that variation in total gray and white matter volume of the adult human brain is primarily (70-90%) genetically determined [Baare et al, 2001] and in a recent magnetic resonance imaging (MRI) brain study with 45 monozygotic and 61 dizygotic 9-year-old twin-pairs, and their 87 full siblings also high heritabilities have been found [Peper et al, in preparation]. ❋ Zoe Brain (2007)
Half the men on the list were monozygotic or identical twins; the other half being dizygotic or nonidentical twins. ❋ Learner_Tobsha (2006)
In studying nonmendelian characters (Chapter 19), and sometimes in genetic counseling, it is important to know whether a pair of twins are monozygotic (MZ, identical) or dizygotic (DZ, fraternal). ❋ Unknown (2004)
"Did Holly Hunter give birth to monozygotic twins or dizygotic twins?" and "Is Holly Hunter really 47?" ❋ Unknown (2006)
In "A Genetic Study of Male Sexual Orientation," a study that has now achieved almost as much renown as LeVay's, the Northwestern University psychologist Michael Bailey and Boston University's Richard Pillard compared fifty-six "monozygotic" twins (identical twins, from the same zygote, or fertilized egg), fifty-four "dizygotic" (fraternal) twins, and fifty-seven genetically unrelated adopted brothers. ❋ Unknown (1997)
Bailey and Pillard reported a gay-gay concordance rate of 11 percent for the adoptive brothers, 22 percent for the dizygotic twins, and 52 percent for the monozygotic twins. ❋ Unknown (1997)
They are dizygotic [twins]. ❋ Big Jon155 (2006)
