Question

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

silent
silent

substitution
substitution

deletion
deletion

insertion

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, resulting in the loss of a single phenylalanine amino acid at position 508 (ΔF508).