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
Relationship of the spindle-assembly checkpoint (SAC) with the cell-cycle machinery
Plant Cell (Blank Labels)
The Eukaryotic Cell
All living organisms descended from a common ancestral cell
The cell membrane.
Newborn Experiences Across Cultures