Question

At an alkaline pH, which of the following hemoglobins cannot be separated from hemoglobin S during hemoglobin electrophoresis?

a. Hb D
b. Hb C
c. Hb A
d. Hb F

Answer 1

At an alkaline pH in hemoglobin electrophoresis, hemoglobin F cannot be separated from hemoglobin S.

Step-by-step explanation:

In hemoglobin electrophoresis at an alkaline pH, the hemoglobin molecules migrate towards anode (+ve) based on their charge. At pH 8.6, all plasma proteins have a negative charge. Among the given options, Hb F (fetal hemoglobin) cannot be separated from Hb S (sickle cell hemoglobin) because they have similar charges and move together during electrophoresis.