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Name: Daniel Redman
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Question:
How were the nucleotides in DNA identified and how are they decoded?



Replies:
One way was to use enzymes that chewed off the nucleotides one at a time, so they could be analyzed chemically. It was rather quick to find out there were only four, it took longer to get the exact structures. To get the code, people used small sections of DNA whose nucleotide sequence they could determine, and then in a test tube used that DNA to make a protein. Then they sequences the protein for its amino acids and compared this with the DNA nucleotide sequence to crack the code.

--ProfBill



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