The artificial insulin gene may have a different nucleotide sequence from the human insulin gene - VCE - SSCE Biology - Question 36 - 2013 - Paper 1
Question 36
The artificial insulin gene may have a different nucleotide sequence from the human insulin gene.
This is because the DNA code is
A. redundant.
B. universal.
C. muta... show full transcript
Worked Solution & Example Answer:The artificial insulin gene may have a different nucleotide sequence from the human insulin gene - VCE - SSCE Biology - Question 36 - 2013 - Paper 1
Step 1
A. redundant.
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Answer
The redundancy of the genetic code means that multiple codons can code for the same amino acid. This allows for variations in nucleotide sequences without necessarily affecting the protein produced. Thus, the artificial insulin gene may differ in its sequence yet still produce functional insulin.
Step 2
B. universal.
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Answer
While the genetic code is referred to as universal, it does not imply that all species have identical DNA sequences for the same protein. Therefore, species-specific differences can lead to variations in the nucleotide sequence of the insulin gene.
Step 3
C. mutated by heat shock.
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Heat shock can lead to mutations, but it's not a direct reason for the difference in sequences between artificial and human insulin. This option does not apply broadly to the inherent nature of the DNA code itself.
Step 4
D. contaminated by bacterial DNA.
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Contamination by bacterial DNA can occur during recombinant DNA techniques; however, this is not a fundamental property of the DNA code. It is external to the coding process itself.
