Question

each resulting from a single base mutation to the original dna segment. identify the type of single base mutation in the original dna segment that would cause each of the resulting mutant amino acid chains. place a label that identifies each type of mutation into the blank box next to each mutant amino acid chain. you may use each label more than once. place only one label in each blank box. amino acid codon chart what type of mutation is in box b? insertion deletion substitution

Explanation:

Step1: Analyze the original and mutant amino acid chains

Original amino acid chain: Met - Cys - Arg - Leu - Lys
Mutant 2 (Box B): Met - Cys - Thr - Leu - Lys
Only one amino acid (Arg in original, Thr in mutant) is changed.

Step2: Recall mutation types

• Insertion: Adds one or more nucleotides.
• Deletion: Removes one or more nucleotides.
• Substitution: Replaces one nucleotide with another.

Since only one amino acid is changed (due to a single base change as per single - base mutation context), it is substitution.

Answer:

Substitution