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Course: Middle school biology  > Unit 7

Lesson 3: Mutations
Science
Middle school biology
Inheritance and variation
Mutations
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Problem

The figures below illustrate a mutation in an organism’s gene sequence.
Figure 1 shows the normal nucleotide sequence of a gene. Figure 1 also shows the amino acids encoded by that gene.
Figure 2 shows the same gene, but with a mutation. Figure 2 shows the amino acids encoded by the mutant version of the gene.
Which of these best predicts the effect of the mutation on the organism?
Choose 1 answer: