Abstract
SummaryThe high rate of twinning in rural areas is suggested to be due to higher coefficient of inbreeding, better physical conditions of mothers on the countryside and higher mean birth order. Family data indicate the frequent role of maternal genotype in DZ twinning.
Publisher
Cambridge University Press (CUP)
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2. Analysis of Multiple Birth Rates in Japan.1. Secular Trend, Maternal Age Effect, and Geographical Variation in Twinning Rates;Acta geneticae medicae et gemellologiae: twin research;1979-04
3. Twining in India;Acta geneticae medicae et gemellologiae;1975
4. Studies of Modern Man;Annual Review of Anthropology;1972-10