A mutation on a sex chromosome that causes a disease  

A mutation on a sex chromosome that causes a disease  

Question 1

In AR disorders, carriers have:

Two mutated genes; two from one parent that cause disease

A mutation on a sex chromosome that causes a disease

A single gene mutation that causes the disease

One copy of a gene mutation but not the disease

Question 2

A 76-year-old patient with a 200-pack year smoking history presents with complaints of chronic cough, dyspnea, fatigue, hemoptysis, and weight loss over the past 2 months. The physical exam reveals decreased breath sounds and dullness to percussion over the left lower lung field. The chest X-ray demonstrates shift of the mediastinum and trachea to the left. These are classic signs of:

Lung cancer

Tuberculosis

Pneumonia

COPD