During a routine physical examination, a 65 year-old male patient tells the physician,

Based on the given symptoms of the patient of having to urinate frequently at night, it is probably the patient has an enlarged prostate gland or has an infection of the bladder or urinary tract as this problem causes a person to urinate frequently during the evening. It will make the person’s sleeping time to be disrupted as frequently urinating has the tendency of waking a person in order to urinate.

evolution

Explanation:

A mutation is a change in DNA, the hereditary material of life. An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. ... Without mutation, evolution could not occur.