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Twin Pair Analysis of Some Palm Indexes

Published online by Cambridge University Press:  01 August 2014

Walter Pinto Jr.  and
Bernardo Beiguelman
Walter Pinto Jr.*
Affiliation:
Department of Medical Genetics, State University of Campinas, Campinas, SP, Brazil
Bernardo Beiguelman*
Affiliation:
Department of Medical Genetics, State University of Campinas, Campinas, SP, Brazil
*
Department of Medical Genetics, State University of Campinas, CP. 1170, Campinas S.P., Brazil
Department of Medical Genetics, State University of Campinas, CP. 1170, Campinas S.P., Brazil

Summary

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The heritability of two main line indexes (DLI and TLI), a palm crease index (API), and an ulnarity index (UI) were investigated by using twin pair methodology for quantitative traits.

The analyses of the data allow to conclude that both DLI and API, which have been used to evaluate the obliquity of the main lines and the distal crease of the palm, should not be considered as depending upon an important genetic component. Otherwise, data on TLI and UI, while showing inconsistencies with the theoretical expectations, may be considered as genetic traits.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 20 , Issue 3 , July 1971 , pp. 295 - 300
Copyright
Copyright © The International Society for Twin Studies 1971

References

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