Which is true about patients with sickle cell trait? A) they have 50% hemoglobin

Question

Which is true about patients with sickle cell trait? A) they have 50% hemoglobin S and 196 sickled cells b) they have 50% hemoglobin S and 50% sickled cells c) They have 100% hemoglobin S and 50% sickled cells d) they have 196 hemoglobin S and 1% sickled cells Both sickle cell trait and sickle cell disease protect patients from which disease? A) breast cancer b) COPD c) malaria d) Asian flu B. 9. 10. Genetic diseases which result in the deficiency of one of the hemoglobin chains d) (subunits) are called: a) thalassemias b) COPD c) hemolytic anemias autoimmune diseases

Explanation / Answer

Ans 8 :b) They have 50% hemoglobin S and 50% sickled cells

The genotype of the person with the sickle cell trait is heterozygous, so the person displays codominance and produce 50% normal hemoglobin and 50 % sickled cells.

Now the sickling of the cell occurs only at low oxygen concentrations.

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