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If the following mRNA strand were produced during transcription, what amino acids would be found in the protein?

CAUGGUGGCUACGGG

The table below shows which amino acid results from each codon.

\begin{tabular}{|r|ccc|}
\hline Amino acids & Glycine & Histidine & Tyrosine \\
\hline Codons & GGU & CAU & UAU \\
& GGC & CAC & UAC \\
& GGA & & \\
& GGG & & \\
\hline
\end{tabular}

A. Glycine-histidine-glycine-glycine

B. Glycine-histidine-histidine-tyrosine-histidine

C. Histidine-glycine-glycine-glycine

D. Histidine-glycine-glycine-tyrosine-glycine


Sagot :

To determine the sequence of amino acids produced from the given mRNA strand, we need to follow a step-by-step process:

1. Identify the mRNA strand:
[tex]\[ \text{CAUGGUGGCUACGGG} \][/tex]

2. Split the mRNA strand into codons: Codons are groups of three nucleotides. We split the given strand into the following codons:
[tex]\[ \text{CAU} | \text{GGU} | \text{GGC} | \text{UAC} | \text{GGG} \][/tex]

3. Translate each codon into its corresponding amino acid using the provided codon-to-amino-acid table:
- [tex]\(\text{CAU} \rightarrow \text{Histidine}\)[/tex]
- [tex]\(\text{GGU} \rightarrow \text{Glycine}\)[/tex]
- [tex]\(\text{GGC} \rightarrow \text{Glycine}\)[/tex]
- [tex]\(\text{UAC} \rightarrow \text{Tyrosine}\)[/tex]
- [tex]\(\text{GGG} \rightarrow \text{Glycine}\)[/tex]

4. Combine the identified amino acids in the correct order:
[tex]\[ \text{Histidine} \rightarrow \text{Glycine} \rightarrow \text{Glycine} \rightarrow \text{Tyrosine} \rightarrow \text{Glycine} \][/tex]

Therefore, the sequence of amino acids produced from the given mRNA strand is:
[tex]\[ \text{Histidine-Glycine-Glycine-Tyrosine-Glycine} \][/tex]

Considering the options provided:
- A. Glycine-histidine-glycine-glycine - Incorrect
- B. Glycine-histidine-histidine-tyrosine histidine - Incorrect
- C. Histidine-glycine-glycine-glycine - Incorrect
- D. Histidine-glycine-glycine-tyrosine-glycine - Correct

Thus, the correct answer is:
[tex]\[ \boxed{\text{D. Histidine-glycine-glycine-tyrosine-glycine}} \][/tex]