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Dermatoglyphics in Twins

Published online by Cambridge University Press:  01 August 2014

Heloisa F. Peña ,
F.M. Salzano  and
Sidia M. Callegari
Heloisa F. Peña
Affiliation:
Department of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
F.M. Salzano*
Affiliation:
Department of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Sidia M. Callegari
Affiliation:
Department of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
*
Departamento de Genètica, Universidade Federal do RGS, Caixa Postal 1953, 90000 Porto Alegre, RS, Brazil

Summary

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The degree of genetic determination of 4 digital and 16 palmar characteristics was investigated in an unselected series of 49 MZ and 51 DZ adult twins. Low indications of heritability were obtained for the qualitative traits, but 6 of the 8 h2 estimates calculated for the quantitative measurements gave values above 0.70. In general, the results reported here are in agreement with those presented by other authors; however, the correlation coefficients observed for the A′d ridge count were lower than those of two other series. All palmar ridge counts seemed to be intercorrelated in a given individual; other expected relationships, however, were not observed. The fingerprints of MZ and DZ twins on the other hand, showed an unexplained difference.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 22 , Issue 1 , January 1973 , pp. 91 - 98
Copyright
Copyright © The International Society for Twin Studies 1973

References

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