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Infant zygosity can be assigned by parental report questionnaire data

  • Thomas S Price (a1), Bernard Freeman (a2), Ian Craig (a3), Stephen A Petrill (a4), Lorna Ebersole (a5) and Robert Plomin (a6)...

A parental report questionnaire posted to a population sample of 18-month-old twins correctly assigned zygosity in 95%of cases when validated against zygosity determined by identity of polymorphic DNA markers. The questionnaire was as accurate when readministered at 3 years of age, with 96% of children being assigned the same zygosity on both occasions. The results validate the use of parental report questionnaire data to determine zygosity in infancy. Twin Research (2000) 3, 129–133.

Corresponding author
*Correspondence: Thomas S Price, Social Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, London, SE5 8AF, UK. Tel: + 44 (0) 207 848 0961; Fax: + 44 (0) 207 848 0866
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Twin Research and Human Genetics
  • ISSN: 1832-4274
  • EISSN: 1839-2628
  • URL: /core/journals/twin-research-and-human-genetics
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