객관식
What is the primary difference between a gene mutation and a chromosome mutation?
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15. Gene Expression
Mutations
객관식
Which of these changes to the DNA triplet 3' GCT 5' will affect the protein produced?
A
3' GCT 5'
B
3' GCG 5'
C
3' GCA 5'
D
3' GAT 5'
검증된 단계별 안내1
Understand that a DNA triplet is a sequence of three nucleotides that corresponds to a specific amino acid or a stop signal during protein synthesis.
Recognize that the original DNA triplet 3' GCT 5' codes for a specific amino acid. Use a codon table to determine which amino acid this triplet codes for.
Identify the changes in the DNA triplet: 3' GCG 5', 3' GCA 5', and 3' GAT 5'. Each of these represents a single nucleotide substitution.
Use a codon table to determine the amino acids coded by the new triplets: 3' GCG 5', 3' GCA 5', and 3' GAT 5'. Compare these amino acids to the one coded by the original triplet.
Determine which change results in a different amino acid or a stop codon, as this will affect the protein produced. The triplet that codes for a different amino acid or a stop signal indicates a change in the protein structure or function.
