A mutagen is
A)an error in base sequence that is repeated in each replication or transcription of DNA.
B)something that causes an error in the nucleotide sequence in DNA.
C)something that causes abnormal growth in embryos.
D)something that causes abnormal and excessive cell division.
E)excessive cell division leading to growth of tumors.

Question

Quizplus · Accepted Answer

A mutagen is any physical or chemical agent that causes a change in the nucleotide sequence of DNA, leading to a mutation. This can occur during replication or transcription of DNA, but it is not necessarily an error that is repeated each time. Mutagens can include radiation, certain chemicals, or even some viruses.

A Mutagen Is