Type of Article: Original Research
Year: 2016 | Volume 4 | Issue 2 | Page No. 2227-2230
Date of Publication: 30-04-2016
ANTHROPOMETRICAL STUDY OF THE SECOND AND FOURTH DIGIT RATIO AND OTHER DIGIT RATIO IN COASTAL REGION OF ANDHRA PRADESH IN INDIA
M. Gayathri *1, Ranganath Vallabhajosyula 2.
*1 Assistant Professor, Department of Anatomy, Government Dharmapuri Medical College, Dharmapuri, Tamilnadu, India.
2 Associate Professor, Graduate School of Medicine, Perdana University, 43400, Selangor, Malaysia.
Address: Dr. M. Gayathri, Assistant Professor, Department of Anatomy, Government Dharmapuri Medical College, Dharmapuri-636703, Tamilnadu, India. Mobile: +91-72006601141
Background: It has been hypothesised that the ratio between the length of the 2nd and 4th digits (2D:4D) is a correlate of prenatal sex steroids, and this relationship is strongest for the right hand. Furthermore, it has been suggested that 2D:4D is sexually dimorphic, the dimorphism is determined early, and 2D:4D among children is stable with growth.The present study aim to study 2D:4D and other digit ratio to show sexual dimorphism in coastal region of Andhra Pradesh, India.
Materials and Methods:Our study includes 200 (96 males and 104 females) subject between ages of 18 to 25 years were recruited randomly excluding those with hand deformities from Coastal regions of Andhra Pradesh. Their digit lengths were measured from the basal crease to the tips usinga Vernier calipermeasuring to 0.01cm minor reading. The 2D:4D and other digit ratiowere then calculated for each subject on both hands. Descriptive statistics and ANOVA were used to analyze the data.
Results: The study showed no significant sexual dimorphism in 2D:4D between males and females whereassignificant sexual dimorphism in other finger ratios.
Conclusion: These observations indicate that, not only 2D:4D, but the other digit ratios have their role in sex identity. In conclusion, our study has provided the first data from coastal region of AndhraPradeshdemonstrating the sexual dimorphism in the3D:4D and3D:5Ddigit ratio. This information is useful in forensic science and anthropology.
Key words: Digit ratio; 2D:4D; sexual dimorphism, Coastal regions of Andhra Pradesh.
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M. Gayathri, Ranganath Vallabhajosyula. ANTHROPOMETRICAL STUDY OF THE SECOND AND FOURTH DIGIT RATIO AND OTHER DIGIT RATIO IN COASTAL REGION OF ANDHRA PRADESH IN INDIA. Int J Anat Res 2016;4(2):2227-2230. DOI: 10.16965/ijar.2016.183