Question

Which type of mitochondrial mutation is NOT passed from an affected mother to her child when the mother exhibits heteroplasmy for the mutation?

A Deletion
B Duplication
C Missense mutation
D Nonsense mutation
E Repeat expansion

Answer 1

A missense mutation is the type of mitochondrial mutation that is NOT passed from an affected mother to her child when the mother exhibits heteroplasmy for the mutation.

Step-by-step explanation:

The type of mitochondrial mutation that is NOT passed from an affected mother to her child when the mother exhibits heteroplasmy for the mutation is a missense mutation. A missense mutation is a point mutation in which a single nucleotide is changed, resulting in the substitution of a different amino acid. This type of mutation can render the resulting protein non-functional and is responsible for diseases such as sickle-cell anemia.