Master Health with Fun Quizzes & Brain Teasers!
imagine that you are a doctor attempting to understand a patient's complaints of stomach cramping, frequent bowel movements, gas, bloating, and nausea. they complain that these symptoms come on whenever they try to consume a dairy product. how would you evaluate the potential of this patient being lactose intolerant, from the four levels of explanation used in evolution? match the statement to the level of explanation that a doctor might use for confirming their diagnosis. 1. the patient is experiencing abdominal pain and gastrointestinal abnormalities due to their inability to breakdown the lactose in the dairy. [ select ] 2. the patient has had life-long habits of eating dairy products, such as ice cream, with adverse effects but has continued to consume dairy products. [ select ] 3. there has been selection for lactose tolerance based on whether there was a consumption of dairy from cow domestication in different homo sapiens cultures. cultures with a lack of cow domestication had less selective pressures to adapt to consuming lactose-rich diets. [ select ] 4. the mutation that led to lactose intolerance developed 4,000 years ago in european lineages of homo sapiens, with parallel evolution with african lineages, but not in those of asian descents until much later. the patient is of asian descent.