2. A 32 year old African American woman, who was healthy, fertile and normotensive, with normal liver and renal function, was found to have a very low serum LDL cholesterol level, of only 14 mg/dl. What mutation might be causing such low LDL cholesterol

2. A 32 year old African American woman, who was healthy, fertile and normotensive, with normal liver and renal function, was found to have a very low serum LDL cholesterol level, of only 14 mg/dl. What mutation might be causing such low LDL cholesterol