Why Are Mutations Uncommon in Normal Cells

question 17

Multiple Choice

Why are mutations uncommon in normal cells?  

• A)Only 25% of the genome codes for proteins, therefore the probability is low that a mutation would occur in a protein coding region.
• B)Most mutations occur after DNA replication.
• C)Many amino acids are coded for by more than one codon.
• D)The mutation rate during DNA replication is 1 in 100 nucleotides.
• E)The mutation rate during DNA replication is zero.

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