UV rays from the sun cause a specific type of improper base pairing called a thymine dimer. If a cell cannot correct this problem, the section of DNA can be removed, causing a deletion of several nucleotides. What will this cause?
A. A point mutation forms that leads to a change in one amino acid.
B. A point mutation forms that leads to changes in a handful of amino acids.
C. The codons shift by one letter, and all the codons before the mutation are changed.
D. The codons could shift by one letter, and all the codons after that point would be off.
Answer:D
UV rays from the sun cause a specific type of improper base pairing called a thymine dimer. If a cell cannot correct this problem, the section of DNA can be removed, causing a deletion of several nucleotides. What will this cause?
A. A point mutation forms that leads to a change in one amino acid. B. A point mutation forms that leads to changes in a handful of amino acids. C. The codons shift by one letter, and all the codons before the mutation are changed. D. The codons could shift by one letter, and all the codons after that point would be off.