Why Are There Fewer TRNA Anticodons Than the 61 Needed

question 42

Multiple Choice

Why are there fewer tRNA anticodons than the 61 needed to match each mRNA codon that codes for an amino acid?

• A)There is some flexibility in pairing between the 5' base of the codon and the 3' base of the anticodon.
• B)There is some flexibility in pairing between the middle base of the codon and the middle base of the anticodon.
• C)There is some flexibility in pairing between the 3' base of the codon and the 5' base of the anticodon.
• D)There is some flexibility in pairing between all 3 bases of the codon and all 3 bases of the anticodon.

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Definitions:

Inducer Molecule

A substance that initiates the expression of genes by interacting with a repressor or an activator.

Active Repressor

A molecular form of a repressor protein that can bind to specific regions of DNA and inhibit gene transcription.

Transcriptional Activity

The process of copying a segment of DNA into RNA by the enzyme RNA polymerase, crucial in gene expression.

Noncoding Region

Sections of DNA that do not code for proteins but may have regulatory roles in gene expression, chromatin structure, and genome organization.