Question

Mutations in DNA may result from all of the following EXCEPT: a. chemical mutagens. b. introduction of a base analog into DNA. c. physical insults on the cell, such as UV light. d. spontaneous mutations due to errors in replication. e. all are true

Answer 1

Answer: Option E

Explanation:

Mutation can be defined as the change in the sequence of DNA, either due to mistakes that takes place during replication or because of environmental factors.

The cause of mutation can be chemical mutagens, UV exposure, spontaneous mutation during replication, introduction of analog base pair.

Mutation can be positive or negative, but most of the time its effect is negative.

Hence, the correct answer is option E