Question

biology 1 fall final
(the image provides a codon chart to a mutation. a sequence of dna is shown in a gene. when the dna is changed, how has the mutation occurred?
box with dna sequence: cgt ata tc c tat gcc cgt gac, with an insertion of tatc marked
options:

• deletion
• insertion (selected)
• substitution
• translocation)

Explanation:

The problem is about a type of mutation in a DNA sequence. Insertion is the addition of one or more nucleotide bases. Here, the sequence has an added segment (TATC is inserted), so the mutation type is insertion. Deletion removes bases, substitution replaces one base, and translocation moves a segment between chromosomes, which doesn't fit here.

Answer:

Insertion