Question

which of the following best describes a mutation?
anything that can damage a gene
a distinguishing quality that can be passed from one generation to another
a change in a gene
a section of a chromosome that codes for a particular trait

Explanation:

To determine the best description of a mutation, we analyze each option:

• "Anything that can damage a gene" describes a mutagen, not a mutation.
• "A distinguishing quality that can be passed from one generation to another" refers to a heritable trait, not a mutation.
• "A change in a gene" matches the definition of a mutation (a change in the DNA sequence of a gene).
• "A section of a chromosome that codes for a particular trait" is a gene, not a mutation.

Answer:

The option "A change in a gene" (the third option from the left)