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Different single-stranded RNA's are composed of 99 nucleotides

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If there are 20 amino acids commonly found in protiens, how many different dipeptides are there? How many different tripeptides? How many different trinucleotides(remember that nucleotides are the building blocks of DNA+RNA)?How many different single stranded RNA's are composed of 99 nucleotides?

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The different single-stranded RNA's are composed of 99 nucleotides.

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A dipeptide is composed of two amino acids. There are 20 possible amino acids in the first position and ...

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