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In 1961, Nirenberg and Matthaei demonstrated experimentally that a set of three nitrogenous bases specifies a single amino acid. This three-base sequence is referred to as the triplet code. Their work confirmed that the genetic code operates as a triplet.

1. a) Correct
2. b) Incorrect
3. c) Somewhat correct
4. d) Not applicable

Correct answer: a) Correct

Solution

Nirenberg and Matthaei's experiments demonstrated that the genetic code is a triplet, where three nitrogen bases specify one amino acid. This finding was a cornerstone in understanding the genetic code.

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