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dizygotic twin

   Also found in: Hutchinson 0.10 sec.
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Noun1.dizygotic twin - either of two twins who developed from two separate fertilized eggs
fraternal twin
twin - either of two offspring born at the same time from the same pregnancy


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A surprisingly elementary error occurs in Kauth's discussion of genetic studies, in which he states that dizygotic twins share half of their genes but that ordinary siblings "share only 25% of their genetic material .
True Nature: A Theory of Sexual Attraction. (Book reviews: is half an ... by Bem, Daryl / The Journal of Sex Research
We estimated the influence of genetic factors on these markers in a cohort of 61 monozygotic and 103 dizygotic twin pairs (mean age = 68 years, range = 49-86).
Both the Environment and Genes Are Important for Concentrations of ... by Pedersen, Nancy L. / Environmental Health Perspectives
James argues that our survey of studies which illustrate the over-representation of like-sex dizygotic twins (DZ) versus unlike-sex dizygotic twins (DZ) could be explained by systematic false positives (i.
RESPONSE TO JAMES by Coney, Nancy S. / The Journal of Sex Research
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