Scelta multipla
A single base substitution is LEAST likely to be deleterious (dangerous) when the change results in _____.
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10. The Structure and Function of DNA
Mutations
Scelta multipla
Which of the following mutations, occurring just after the start codon in the mRNA is likely to have the most serious effects on the polypeptide product?
A
Deletion of one codon.
B
Deletion of one nucleotide.
C
Insertion of three nucleotides.
D
Substitution of one nucleotide.