Mutational "hot spots" in human DNA
a. always occur in genes that are transcribed.
b. are common at cytosines that have been modified to 5?-methylcytosine.
c. involve long stretches of nucleotides.
d. occur only where there are long repeats.
e. are very rare in genes that code for proteins.
Answer: b. are common at cytosines that have been modified to 5?-methylcytosine.
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