Cystic Fibrosis

Cystic fibrosis is a severe genetic disease caused by a mutation in a single gene on chromosome 7. It leads to thick mucus in the lungs, causing infections and reduced life expectancy. The disease is recessive, requiring two defective alleles for symptoms to appear. Despite early hopes for gene therapy, a cure remains elusive. Research continues to seek solutions for affected families.

What is the primary cause of cystic fibrosis?

• A viral infection

• A mutation in a single gene

• An autoimmune disorder

• A bacterial infection

How does cystic fibrosis primarily affect the lungs?

• By clogging them with thick mucus

• By reducing oxygen absorption

• By causing inflammation

• By increasing blood flow

What is the inheritance pattern of the cystic fibrosis allele?

• Dominant

• Recessive

• X-linked

• Y-linked

What is the probability of a child being affected by cystic fibrosis if both parents are carriers?

• 1 in 2

• 1 in 3

• 1 in 4

• 1 in 5

When was the specific gene for cystic fibrosis identified?

• 1989

• 2009

• 1999

• 1979