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Dramatically Different Dizygotic Twins: Will We Include Them in Research? / Twin Research Reviews: Congenital Anomalies, Mirror-Image Effects in Conjoined Twins, Older Mothers of Twins; / Twin Statistics: 'Massachusetts, Land of Twins'; / Tribute: Dr Victor A. McKusick

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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The increased frequency of interracial marriage is a likely source of unusual-looking dizygotic (DZ) twins. Some members of DZ twin pairs born to mixed-race couples inherit very different physical features from their parents. This raises several questions, such as: Will researchers wish to include such twins in their ongoing studies? Next, new twin research concerned with congenital anomalies, mirror-image effects in conjoined twins and older mothers of twins will be reviewed. New statistics on twinning rates in Massachusetts will also be summarized, followed by a tribute to the late medical geneticist Dr. Victor A. McKusick.

Keywords

DZ twinsmixed couplesmirror-image effects
Type
News, Views, and Comments
Information
Twin Research and Human Genetics , Volume 11 , Issue 5 , 01 October 2008 , pp. 567 - 570
Copyright
Copyright © Cambridge University Press 2008