Background Paragraph: Another example of incomplete dominance is with sickle cell anemia, a disease in which a blood protein called hemoglobin is produced incorrectly. This causes the red blood cells to have a sickle shape, making it difficult for these misshapen cells to pass through the smallest blood vessels. A person that is homozygous recessive ( ss ) for the sickle cell trait will have red blood cells that all have the incorrect hemoglobin. A person who is homozygous dominant ( SS ) will have normal red blood cells. 
Story: Two brothers went to take a blood test. Ned had sickle cell anemia, while Ted didn't have that disease. Their mother took Ned to a specialist.
Which brother didn't display incomplete dominance? Which brother didn't have any sickle shaped blood cells? Which brother didn't have misshapen cells that had difficulty passing through the smallest blood vessels? Which brother displayed incomplete dominance? Which brother had a blood protein called hemoglobin produced correctly? Which brother had a blood protein called hemoglobin produced incorrectly? Which brother had misshapen cells that had difficulty passing through the smallest blood vessels? Which brother had sickle shaped blood cells? Which brother was homozygous recessive? Which brother was not homozygous recessive?