Question
What is point mutation? Give an example.
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Answer
Point mutations are a large category of mutation that describe a change in single nucleotide of DNA, such that nucleotide is switched for another nucleotide, or that nucleotide is deleted, or a single nucleotide is inserted into the DNA that causes that DNA to be different from the normal or wild type gene sequence. For example, Sickle-cell disease.
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a. valine
b. proline
ii. Write the nucleotide sequence of the DNA strand from which this mRNA was transcribed
iii. What does the last codon of this RNA stand for?