A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the laboratory. Which statement best provides evidence that the substance is a mutagen? -The cells die within hours of being exposed to the chemical. -The cells grow more quickly than those that were not exposed to the chemical. -The cells change after being exposed to the chemical, and this change is passed to the next generation of cells. -The cells continue to divide at the same rate as before they were exposed to the chemical.

The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

Explanation:

Mutation is a process that occurs from time to time to the genetic material of living cells. Mutation is a change in the nucleotide sequence of a DNA or gene. It is usually caused by errors during replication or induced by an external substance called MUTAGEN.

A mutagen is any substance that causes mutation in an organism. Hence, according to the question, the chemical substance which is thought to be a mutagen will change the cells after being exposed to the chemical, and this change is passed to the next generation of cells.

N.B: Since mutation affects the gene, it is passed on to the offsprings during reproduction.

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b would be the right answer