AP Biologyeasymcq1 pt
A missense mutation results in
A.a single amino acid substitution
B.an early stop codon
C.a shifted reading frame
D.no change at all
Explanation
Core Concept
One base change alters one codon, swapping one amino acid for another — as in sickle-cell disease (glutamate → valine).
Correct Answer
Aa single amino acid substitution
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