What was marshall nirenberg and heinrich matthaei’s contribution to our current understanding of the genetic code?
discovery of codons
discovery and extraction of dna
creation of a model of dna
creation of photo 51

The correct answer would be discovery of codons.

Marshall Nirenberg and Heinrich Matthaei experimentally decoded the triplet codons with the help of synthetic homopolymer of nucleic acid.

They used synthetic RNA which is made up of uracil units only that is, polyuridycil acid (poly-U) and a cellular component which could translate protein.

The poly-U RNA results in the formation of polypeptide chain entirely consisted of phenylalanine. Thus, UUU codes for phenylalanine.

Similarly, other codons were also deciphered.

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after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.