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A genetic disorder of the nervous system results from a mutation in which a nucleotide is inserted into a gene - Scottish Highers Human Biology - Question 2 - 2016
Question 2
A genetic disorder of the nervous system results from a mutation in which a nucleotide is inserted into a gene. Which of the following types of mutation causes this ... show full transcript
Worked Solution & Example Answer:A genetic disorder of the nervous system results from a mutation in which a nucleotide is inserted into a gene - Scottish Highers Human Biology - Question 2 - 2016
Step 1
Which of the following types of mutation causes this genetic disorder?
Answer
The genetic disorder described results from a mutation where a nucleotide is inserted into a gene. This particular kind of mutation is known as a 'frame-shift' mutation. When a nucleotide is inserted into a genetic sequence, it shifts the reading frame for the entire sequence downstream of the mutation. This change leads to the production of an incorrect protein, which is often the cause of the genetic disorder.
In this context, the correct answer is:
D. frame-shift