Summary
Palm prints of 374 parents and 362 children collected from 187 families of Japanese were studied with special reference to a missing c triradius. It was noted that the missing c triradius occurred with significantly increased frequency in the children of affected parents compared with that in all children studied, indicating the presence of genetic factors in its expression. It was suggested that the segregation data were more consistent with the effect of polygenic rather than monogenic inheritance in the causation of this trait. Analysis of the data by Falconer's method demonstrated that the heritability of the missing c triradius was calculated to be 105.0±16.3%, indicating the possibility of multifactorial origin with very strong genetic determination (nearly 100%) in the genesis of this trait.
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Katayama, K. Genetic study of missing C triradius on the palm: Estimation of the heritability of liability. Jap J Human Genet 25, 23–27 (1980). https://doi.org/10.1007/BF01876542
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DOI: https://doi.org/10.1007/BF01876542
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