THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1
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3
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6
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9
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Detailed explanation-1: -One amino acid is coded using six nitrogen bases. So the codon codes for the amino acid, requiring a total of six nitrogen bases.
Detailed explanation-2: -Methionine and tryptophan are the only two amino acids that are coded for by just a single codon (AUG and UGG, respectively). The other 18 amino acids are coded for by two to six codons. Because most of the 20 amino acids are coded for by more than one codon, the code is called degenerate.
Detailed explanation-3: -So it takes six nitrogen bases to code for one amino acid. So a codon codes for an amino acid and requires a total of six nitrogen bases.
Detailed explanation-4: -As we know, a code of three nitrogen bases is responsible for specifying one amino acid.
Detailed explanation-5: -There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands.