Recently, a Harvard research group published that statins, a cholesterol lowering drug cause muscle pain in some patients. Molecular genetics studied uncovered that the allele H codes for LDL receptors that are needed to metabolize LDL cholesterol. People who are HH have healthy levels of LDL, whereas those who are hh have dangerous levels of cholesterol that often lead to heart attacks and death during childhood. Interestingly, those who are Hh have high levels of cholesterol and are at risk of a heart attack as a young adult, but if their cholesterol is managed, they will have a long life. This is an example of
1) codominance
2) incomplete dominance
3) complete dominance
4) lethal dominance
5) recessive