Question

Which type of mutation causes cystic fibrosis?(1 point)
Responses

insertion
insertion

deletion
deletion

silent
silent

substitution

Answer 1

The type of mutation that causes cystic fibrosis is a **deletion**. Specifically, it is often a deletion of three nucleotides in the CFTR gene, which results in the loss of a phenylalanine residue at position 508 (ΔF508).