Which change in a gene's DNA sequence would have the least effect on the eventual amino acid sequence produced from it?
A) Deletion of two consecutive nucleotides
B) Addition of one nucleotide
C) Addition or deletion of three consecutive nucleotides
D) Substitution of one nucleotide AND addition of one nucleotide
E) Addition of two consecutive nucleotides

Question

Which change in a gene's DNA sequence would have the least effect on the eventual amino acid sequence produced from it?
A) Deletion of two consecutive nucleotides
B) Addition of one nucleotide
C) Addition or deletion of three consecutive nucleotides
D) Substitution of one nucleotide AND addition of one nucleotide
E) Addition of two consecutive nucleotides

Quizplus · Accepted Answer

Addition or deletion of three consecutive nucleotides would result in the addition or loss of only one amino acid during protein synthesis, which may not significantly affect the overall function of the protein. The other options involve changes in the reading frame and can result in frameshift mutations and altered amino acid sequences, which could have more significant effects on protein function.

Which Change in a Gene's DNA Sequence Would Have the Least