Question

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

substitution
substitution

insertion
insertion

silent
silent

deletion

Answer 1

The type of mutation that causes cystic fibrosis is a **deletion**. Specifically, it is a deletion of three nucleotides in the CFTR gene, which leads to the loss of a phenylalanine amino acid at position 508 (ΔF508) in the CFTR protein.