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Calculation of paternity index in a paternity dispute case in Himachal Pradesh, India

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Author Affiliations

  • 1DNA Unit, Regional Forensic Science Laboratory, Mandi, Himachal Pradesh, India
  • 2DNA Unit, Regional Forensic Science Laboratory, Mandi, Himachal Pradesh, India
  • 3DNA Unit, Regional Forensic Science Laboratory, Mandi, Himachal Pradesh, India

Res. J. Forensic Sci., Volume 11, Issue (2), Pages 15-21, July,29 (2023)

Abstract

In forensic science laboratories, DNA testing in disputed paternity cases is a common analysis. The goal of the test is to show the similarities and differences in analyzed genetic markers between the putative father, mother, and child. When the DNA profile of alleged father matches with one of the two alleles examined in the DNA profile of putative child, alleged cannot be excluded as biological father. In the present investigation, the paternity was determined from an aborted foetus. The blood sample of victim and accused collected on FTA cards and foetus were received in the DNA Unit, Regional Forensic Science Laboratory, Mandi to establish the paternity. A full and concordant match was found between the DNA profiles obtained from the accused's blood sample on the FTA card and one of the two alleles in the genotype of the foetus, thus proving paternity. The likelihood of paternity was determined to be >99.99% based on the combined paternity index, which was assessed to be 1.20 x 1011. Therefore, it was impossible to rule out the accused as the biological father of the aborted foetus.

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