Question

The gene for cystic fibrosis is located over chromosome
A. 4
B. 7
C. 11
D. 12

Answer 1

Hint: The gene that is responsible for cystic fibrosis disease is called the cystic fibrosis transmembrane regulator gene or CFTR gene.

Complete answer: Cystic fibrosis is an autosomal recessive disorder which is caused by the defect in the 7th chromosome. It is a fatal disease.
It damages the tissues of the lung and digestive system.
Mucous, sweat, and digestive juice producing cells are also affected by this disease.
Cough, frequent lung infections, fatty stools, inability to gain weight are some common symptoms of this disease.
Salty sweat, cough with blood or phlegm, diarrhea, heartburn, constipation, bulky stool, sinusitis, wheezing, shortness of breathing, pulmonary hypertension, delayed puberty, acute bronchitis, deformity of nails, nasal polyps, pneumonia, etc. are other symptoms of this disease.

Additional information: Chloride channels are also affected by this disease.
It is an inborn disease. Early diagnosis can help in the early treatment of the newborn.
Supportive care is done with sodium chloride.
Medication includes penicillin and antibiotic treatment.
Dietary supplements and cough related medicines are also used to treat this disease.
There is no cure for this disease; by providing medication doctors can only support the life of the patient and reduce the complications.

So, here the correct answer is option B. 7.

Note: As it is a recessive disease, when both parents will be affected, only then the offspring will be affected with cystic fibrosis.