8.1: Gene mutations

Question 1

Describe how duplication gene mutation occurs and what follow on effect this has

Answer 1

A base is duplicated, this results in a frameshift - every codon downstream of the mutation will change, potentially every amino acid downstream of the mutation will be altered

Question 2

Describe how inversion gene mutation occurs

Answer 2

A group of bases become separated from the DNA, but rejoin in reverse order

Question 3

Describe how translocation gene mutation occurs

Answer 3

A group of bases become separated from the DNA sequence in one chromosome and are inserted into the DNA sequence in a different chromosome