The exposure of DNA to excessive levels of ultraviolet radiation produces dimers of thymine (a nucleotide); if unrepaired, these can lead to production of skin cancer.This mutation would
A) have no effect on genes.
B) have no effect on proteins.
C) affect both genes and proteins.
D) affect only proteins.
E) affect only genes.

Question

Quizplus · Accepted Answer

The formation of thymine dimers resulting from exposure to excessive levels of ultraviolet radiation can damage the DNA sequence, which alters the gene expression and affects the protein synthesis. Consequently, this mutation affects both genes and proteins, making C the best answer choice.

The Exposure of DNA to Excessive Levels of Ultraviolet Radiation