Hereditary anemia known as sickle cell disease (SCD) results from inheritance of a variant form of β-globin protein (βS), rather than the wild-type β-globin protein (βA). Which of the following did Linus Pauling find following gel electrophoresis of hemoglobin protein from individuals with the following three genotypes: βAβA, βAβS, or βSβS?
◦ the lane containing the hemoglobin from the heterozygote (βAβS) individual had two protein bands with differing electrophoretic mobility
◦ the lane containing the hemoglobin from the homozygous (βAβA) individual had two protein bands with differing electrophoretic mobility
◦ the lane containing the hemoglobin from the homozygous (βSβS) individual with SCD had two protein bands
◦ all three lanes had the same two protein bands with the same electrophoretic mobility
◦ all three lanes had just one protein band with the same electrophoretic mobility
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