Question

multiple choice question
you are studying a plant gene in an individual and one of its progeny. you determine that the parent plant has the base c in position 34 of the gene, while the offspring has an a in the same position. despite that, the two plants show the same phenotype. which of the following statements about this scenario is true?
o this is not an example of a mutation because the phenotype is not affected
o this is an example of a mutation.
o this is not an example of a mutation, because only a single base has changed
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Explanation:

A mutation is defined as a change in the DNA sequence. Here, there is a change in the base at position 34 of the gene (from C to A). Whether or not the phenotype is affected (due to, for example, redundancy in the genetic code - multiple codons can code for the same amino acid) does not determine if a mutation has occurred. A single - base change is still a mutation.

Answer:

This is an example of a mutation.