Question

In the diagram, what type of mutation is shown?

Wild-type hemoglobin DNA
Mutant hemoglobin ONA
VIINIT
mRNA
mRNA
AANU, imam
Normal hemoglobin
Glu
Sicile-cell hemoglobin
Val
substitution - a base was changed
O insertion - a base was added
O deletion - a base was removed

Answer 1

substitution - a base was changed

Step-by-step explanation:

The nucleotide sequence CTT was changed to the sequence CAT. The T was substituted with an A. This changed the encoded amino acid from Glu to Val.

An insertion is where an additional base is added (e.g. if the sequence changed from CTT to CATT)

A deletion is when a base is lost (e.g. if the sequence changed from CTT to CT)