Question

A scientist studying a plant induces a mutation in a gene that determines flower color.The original sequence of the gene is ATGGAAGCA, and the mutated sequence is ATGGAGGCA. Which statement explains what will occur for the trait coded by the gene?AThere is no change in the trait as the mutated sequence will code for the same amino acid.BThere is a change in the trait as the mutated sequence will code for a different amino acid.CThere is a change in the trait as the mutated sequence will code for a protein with feweramino acids.DThere is no change in the trait as the mutated sequence will code for a new protein with anextra amino acid.

Answer 1

In this case, we have a mutation in the 6th base, an adenine by guanine, if we go for triplets, we have the following original sequence ATG GAA GCA, coding for the following amino acids Met Glu Ala, and the mutated will be ATG GAG GCA, were the amino acid sequence is Met Glu Ala, therefore even when we have a change in the second codon still codify by the same amino acid. Therefore the correct answer is option A.