Question
3. The video taught us about types of mutations. Complete the table below.
Mutation Type
Description of base change
in the DNA
If ACTTC is a DNA
sequence, how might
the sequence appear
after the mutation
type?
Does this apply to
any of the sequences
from Part 1 above?
(DNA sequence 2, 3,
4, or 5)?
Substitution
insertion
Deletion
Chromosomal
mutations
(Does not apply
here.)
Answer
Substitution: A single base is replaced with another, e.g. ACTTC → AATTC.
Insertion: An extra base is inserted, e.g. ACTTC → ACCTTC.
Deletion: A base is removed, e.g. ACTTC → ATTC.
Chromosomal mutations: Large-scale changes to the structure of chromosomes, e.g. deletion or duplication of a chromosome. (Does not apply here.)
No, none of the sequences from Part 1 above apply to any of the mutation types.