Paternity calculations in a di-spermy case

Bruce Budowle, Christina Capt, Ranajit Chakraborty, Jianye Ge

Research output: Contribution to journalArticlepeer-review


In a criminal paternity case, which involved analysis of the product of conception, a rare circumstance was observed. The product of conception was triploidy, apparently due to an egg fertilized by two sperm. Since there is little guidance on how to calculate the probability of the DNA evidence given some basic hypotheses, the formulae were derived and are presented herein. These approaches could provide guidance for similar situations if they arise.

Original languageEnglish
Pages (from-to)339-343
Number of pages5
JournalInternational journal of legal medicine
Issue number2
StatePublished - 1 Mar 2017


  • Partial molar pregnancy
  • Paternity index
  • Paternity test
  • Polyspermy
  • Product of conception
  • Triploid


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