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Expert Challenges Court Ruling on Twin Paternity Testing

4/16/2026

Summary

Story summary

Professor Michael Krawczak of Kiel University criticized a Court of Appeal decision on paternity testing for monozygotic-twin children.
He expressed astonishment at the court's claim that it is not possible to determine which twin fathered a child, despite 2018 demonstrations of feasibility.
Krawczak said molecular genetic techniques can assign paternity.
He noted high costs but asked whether they justify avoiding genetic analysis given the serious implications.

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Story summary

Professor Michael Krawczak of Kiel University criticized a Court of Appeal decision on paternity testing for monozygotic-twin children.
He expressed astonishment at the court's claim that it is not possible to determine which twin fathered a child, despite 2018 demonstrations of feasibility.
Krawczak said molecular genetic techniques can assign paternity.
He noted high costs but asked whether they justify avoiding genetic analysis given the serious implications.