Genetically Modified Fish

How does Halacha view the status of GMOs (genetically modified organisms)? Is an animal kosher if it contains traces of non-kosher DNA?

Based on the popular book Headlines: Halachic Debates of Current Events by Dovid Lichtenstein, this sourcesheet was adapted for teens by Aryeh Kaminetsky. Includes the tzuras hadaf for the quoted Gemaras.

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