Chapter 4, Problem 10TYR

Mutagens sometimes cause no harm to cells for all of the following reasons except

1. a. some mutagens are natural, harmless products of the cell itself.
2. b. most of the human DNA does not code for any proteins.
3. c. the body’s DNA repair mechanisms detect and correct genetic damage.
4. d. change in a codon does not always change the amino acid encoded by it.
5. e. some mutations change protein structure in ways that are not critical to normal function.