The diagram below can be used to identify amino acids coded for by mRNA codons - Scottish Highers Human Biology - Question 3 - 2015
Question 3
The diagram below can be used to identify amino acids coded for by mRNA codons.
### amino acid
3rd base OF CODON
2nd base OF COD... show full transcript
Worked Solution & Example Answer:The diagram below can be used to identify amino acids coded for by mRNA codons - Scottish Highers Human Biology - Question 3 - 2015
Step 1
Identify the codons in the mRNA strand
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Answer
The provided mRNA strand is A U G C A C U G U A A. We can break this into codons (groups of three nucleotides):
A U G
C A C
U G U
A A
This results in four codons.
Step 2
Translate each codon to its corresponding amino acid
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Answer
Using the codon chart:
A U G codes for Methionine (Met)
C A C codes for Histidine (His)
U G U codes for Cysteine (Cys)
A A results in an incomplete codon which does not code for an amino acid.
Thus, we have:
Methionine
Histidine
Cysteine
Therefore, three different amino acids are coded by the mRNA strand.
Step 3
Conclusion
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Answer
The final count of distinct amino acids coded for by the mRNA strand A U G C A C U G U A A is 3.
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