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

mRNA: GGCUACGGGCAUCAC

The table below shows which amino acid results from each codon.
\begin{tabular}{|c|c|c|c|}
\hline Amino acids & Glycine & Histidine & Tyrosine \\
\hline \multirow[t]{4}{*}{ Codons } & GGU & CAU & UAU \\
\hline & GGC & CAC & UAC \\
\hline & GGA & & \\
\hline & GGG & & \\
\hline
\end{tabular}

A. Glycine-glycine-tyrosine-glycine-histidine

B. Histidine-glycine-glycine-glycine-tyrosine

C. Histidine-glycine-glycine-tyrosine-glycine

D. Glycine-tyrosine-glycine-histidine-histidine


Sagot :

To determine the amino acids coded by the given mRNA strand, we need to follow these steps:

1. Breakdown the mRNA strand into codons: Each codon is a sequence of three nucleotides.
2. Translation of each codon to their corresponding amino acids using the provided codon table.

Given mRNA strand: GGCUACGGGCAUCAC

Step 1: Break down the mRNA strand into codons

Divide the mRNA strand into groups of three nucleotides (codons):
[tex]\[ \text{GGCUACGGGCAUCAC} \rightarrow \text{[GGC, UAC, GGG, CAU, CAC]} \][/tex]

Step 2: Translate each codon to its corresponding amino acid using the codon table

Using the given table:
[tex]\[ \begin{array}{|c|c|c|c|} \hline Amino acids & Glycine & Histidine & Tyrosine \\ \hline \multirow[t]{4}{*}{ Codons } & GGU & CAU & UAU \\ \hline & GGC & CAC & UAC \\ \hline & GGA & & \\ \hline & GGG & & \\ \hline \end{array} \][/tex]

The codons map to their respective amino acids as follows:

- GGC: Glycine
- UAC: Tyrosine
- GGG: Glycine
- CAU: Histidine
- CAC: Histidine

Now, listing the amino acids based on the codons:
[tex]\['GGC', 'UAC', 'GGG', 'CAU', 'CAC'\][/tex]

Translates to:
[tex]\['Glycine', 'Tyrosine', 'Glycine', 'Histidine', 'Histidine'\][/tex]

So, the sequence of amino acids is: Glycine-Tyrosine-Glycine-Histidine-Histidine

Therefore, the correct answer is:
\
D. Glycine-tyrosine-glycine-histidine-histidine