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weinberg's difference

Acta geneticae medicae et gemellologiae: twin research (1)

International Soc for Twin Studies (1)

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Zygosity Partitioning of Small Twin Samples
Gordon Allen, Zdenek Hrubec
Journal:

Acta geneticae medicae et gemellologiae: twin research / Volume 34 / Issue 3-4 / October 1985

Published online by Cambridge University Press:

01 August 2014, pp. 167-174

Print publication:

October 1985
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When the Weinberg estimate of the proportion of monozygotic pairs is quite deviant from that in the source population, it is likely to be wrong because Weinberg's difference is much less stable than the zygosity proportions. A formula is proposed for the probability distribution of possible compositions of a small sample of twins based on sex concordance in the sample and zygosity proportions in the source population.