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The antiparallel, double helix structure of DNA symbolizes the evolution of the
biblical rite of circumcision, brit milah. Established as a testimony to the eternal covenant
between God and Abraham, the practice has perpetuated through the millennia,
commemorating and harkening back to Judaism’s seminal covenant. Similar to the double
helix’s two antiparallel trajectories, brit milah also has a forward looking direction, as its
protocol has evolved to ensure its perpetuity and safety. One such safeguard- metztizah
b’peh, the addendum to ritual circumcision, which requires the mohel (ritual peritomist) to
orally suck blood from the wound immediately following the excision of the foreskin - has
been vociferously contended over in recent years.