Question

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

substitution
substitution

deletion
deletion

silent
silent

insertion

Answer 1

Cystic fibrosis is caused by a **deletion** mutation. Specifically, it is often due to the deletion of three nucleotides in the CFTR gene, leading to the loss of a phenylalanine amino acid at position 508 (ΔF508).