Which of the following statements about sickle cell anemia is INCORRECT?
A. Newborn infants homozygous for the sickle cell gene have few symptoms because their red cells also contain a large amount of fetal hemoglobin as well as sickle cell hemoglobin.
B. Clumps of sickled red cells block blood vessels when blood oxygen content is reduced, which impedes blood flow to vital organs.
C. Red cells have a shorter than normal survival in the circulation.
D. No treatment is available.
E. Prenatal diagnosis of sickle cell anemia can be made by examination of DNA from fetal cells obtained by amniocentesis.
Question 2
A positive HIV antibody test indicates immunity to HIV.
Indicate whether the statement is true or false
Examples of different cell types in humans
Cell showing nucleoids within mitochondria
Basal cell carcinoma.
Use of cell fusion and selection to obtain hybridomas producing monoclonal antib
Structure of an animal cell
Control of the cell cycle by cyclin-dependent kinases, and the checkpoints at which they operate