Question

Which of the following frameshift mutations might be expected to have the least impact on an organism?

A. a deletion of two nucleotides near the beginning of a gene
• B. an insertion of three nucleotides in the middle of a gene
C. a deletion of four nucleotides near the end of a gene
D. an insertion of five nucleotides at a gene's promoter site

Answer 1

B because in DNA sequence or RNA sequence it shows that there is only 3 letters in one group for each so if you add 3 more it wouldn’t Change much just only the 3 letters that was inserted become a new DNA or RNA sequence. I hope this help let me know if you have questions. :)