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R-L Symmetry of Cummins' Summational Main Line Index (1936) and Peculiarites of Asymmetric R-L Combinations1

Published online by Cambridge University Press:  01 August 2014

A. Sharma
A. Sharma*
Affiliation:
Dept. of Anthropology, University of Delhi, (India)

Summary and conclusion

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Differential trends of R/L Symmetry as shown by the incidences of Symmetry (S) and Asymmetry (A) in Cummins' summational Main Line Index, as based on the Burman material (400 ♂ & 71 ♀) are slightly higher in females than in males. However, these are not statistically significant.

By grouping MLI values in two categories, (a)-5 or 〈 5 and (b)-6 or 〉 6, it is found that MLI values above 6 are largely involved (relative to 5 or 〈 5) in contributing to the incidence of asymmetric R/L combinations of MLI. Further, the male-female differences in the three combinations (a) & (a), (a) & (b), (b) & (b) are statistically significant.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 14 , Issue 2 , April 1965 , pp. 205 - 210
Copyright
Copyright © The International Society for Twin Studies 1965

Footnotes

1

The present paper is based on a part of Art. VII of the unpublished Doctoral Thesis (Sharma 1962).

References

1. Cummins, H.: Bimanual asymmetry of the palmar main lines (pp. 1-8). Reprinted from Quart. Phi Beta Pi Medical Fraternity 39: 4–10, 1942.Google Scholar
2. Cummins, H. & Midlo, C.: Finger prints, palms and soles: An introduction to dermatoglyphics (Blakiston, Philadelphia), 1943.Google Scholar
3. Cummins, H. & Midlo, C.: Unabridged and corrected republication of Cummins & Midlo (1943), 1961.Google Scholar
4. Sharma, A.: A methodological note on the geometric basis of MLI determination. Anthropologist 6: 10–21, 1959–1961.Google Scholar
5. Sharma, A.: Symmetry of four palmar main lines collectively and of modal types in the Burman series. Anthropologist 7: 21–32, 1960–1963.Google Scholar
6. Sharma, A.: The geometric basis of MLI determination. “Abs. No. 240”. In Excerpta Medica Foundation International Congress Series No. 32: E 111, 1961.Google Scholar
7. Sharma, A.: A study of palmar dermatoglyphics of Burmans: Certain fresh méthodologie approaches as based on Burman data. Unpublished Doctoral Thesis (typescript): 1–503, 1962.Google Scholar
8. Sharma, A.: The geometric basis of MLI determination. In Proceed, of the Second Intern. Cong, of Human Genet., publ. by Gregor Mendel Institute - Rome, 1963: 15, 32–33.Google Scholar