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Letter: Letters: Tale with a twist

Published 13 November 1993

From MARK BURBIDGE

I wonder if anyone can help me. I want to know why the pitch of DNA’s
helix is the way it is. Is there any principle stopping it being in the
opposite sense, and what difference – if any – would this make to life on
earth?

Mark Burbidge Birmingham

Issue no. 1899 published 13 November 1993

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