A codon is a short sequence of three nucleotides. Each codon codes for one amino acid. In the exposed example, there are six bases composing two codons. So two amino acids are coded by this mRNA sequence.
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- When the transcription process is over, the new mRNA molecule leaves the nucleus and goes to the cytoplasm.
- Once in the cytoplasm, mRNA meets a ribosome, and the translation process begins.
- The ribosome reads mRNA in 5' to 3' direction. While doing so, tRNA recognizes the codons and adds the correct amino acid to the growing peptidic chain.
- A codon is a short sequence of three nucleotides that carry genetic information. Each codon codes for one amino acid.
- In nature, 20 amino acids compose the proteins, and more than 20 possible codons combinations. So one amino acid is coded by more than one codon.
What you need to consider when answering this question is that the sequence of three nucleotides composes one codon.
So in the exposed example, you have the following mRNA sequence.
CGAUAC
Let us assume that its direction is 5' - 3'.
5'-CGAUAC-3'
So tRNA will add amino acids from the left to the right.
Now let us separate the codons. You need to add a space for every three bases.
5'- CGA UAC -3'
We got two codons. And we already know that each codon codes for one amino acid.
So if we have two codons, two amino acids will be added to the chain.
These codons codes for Arginine and Tyrosine.
The number of amino acids depends on the number of codons.
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