Answer:
Step-by-step explanation:
The protein-coding region of a healthy adult reads ATGGGGATATGAGCAT.
The beginning of a protein-coding region of the tanning individual DNA reads ATGGGGATATGGCAT
The site of mutation is close to the end - GGCA - between the two G's, a base (A) has been deleted.
Thus this type of mutation is termed deletion: a process whereby one or more bases are removed from a nucleotide sequence of DNA.