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Twin Towers: The Ones Left Behind; Research Reviews: Chimeric DZ Twins, DZ Twin Mothers; Revisited: The New York Child Development Center Twin Study; New and Unusual Twins

Published online by Cambridge University Press:  21 February 2012

Nancy L. Segal
Nancy L. Segal*
Affiliation:
Department of Psychology, California State University, United States of America. nsegal@fullerton.edu
*
*Address for correspondence: Nancy L. Segal, Department of Psychology, California State University, Fullerton, CA 92834, USA.

Abstract

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Twin victims and survivors of the 2001 World Trade Tower attack are remembered. Central themes from the twin loss literature are also highlighted. Next, new research studies on dizygotic (DZ) twins and mothers of DZ twins are reviewed. Specifically, a rare monochorionic–diamniotic DZ twin pair with chimerism is described, and findings concerning genetic variants of GDF9 in mothers (that are associated with DZ twinning tendencies in families) are summarized. This is followed by another look at the controversial 1960s Child Development Center Twin Study that tracked the development of separated twins. Information on several new and unusual twins is also presented.

Type
News, Views, and Comments
Information
Twin Research and Human Genetics , Volume 9 , Issue 6 , 01 December 2006 , pp. 1038 - 1042
Copyright
Copyright © Cambridge University Press 2006