Question

1. describe a codon. i need a hint one of the three positions in the ribosome a group of three mrna nucleotides a group of three trna nucleotides

Explanation:

A codon is defined as a sequence of three consecutive nucleotides in mRNA (messenger RNA) that codes for a specific amino acid or signals the start/stop of translation. The first option refers to ribosomal positions (not codons). The third option is incorrect as tRNA has anticodons, not codons. So the correct description is a group of three mRNA nucleotides.

Answer:

B. A group of three mRNA nucleotides