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What was marshall nirenberg and heinrich matthaei’s contribution to our current understanding of the genetic code?

a. discovery of codons
b. discovery and extraction of dna
c. creation of a model of dna
d. creation of photo

User Weicheng
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Answer: c.

Explanation: discovered the key to breaking the genetic code when they conducted an experiment using a synthetic RNA chain.

User Simen Russnes
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