HbS beta-thalassemia with a low amount of normal haemoglobin is called

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Multiple Choice

HbS beta-thalassemia with a low amount of normal haemoglobin is called

Explanation:
When sickle cell hemoglobin (HbS) is inherited with a beta-thalassemia mutation, the amount of normal hemoglobin (HbA) that can be produced depends on whether the beta-thalassemia is beta-plus or beta-zero. Beta-plus means some beta-globin is produced, so there is a small amount of HbA alongside HbS. If there is a low amount of normal hemoglobin, this corresponds to HbS beta-plus thalassemia. The beta-zero form would produce no HbA at all, and the generic label HbS beta-thalassemia doesn’t specify whether HbA is present. HbC disease is a different disorder altogether.

When sickle cell hemoglobin (HbS) is inherited with a beta-thalassemia mutation, the amount of normal hemoglobin (HbA) that can be produced depends on whether the beta-thalassemia is beta-plus or beta-zero. Beta-plus means some beta-globin is produced, so there is a small amount of HbA alongside HbS. If there is a low amount of normal hemoglobin, this corresponds to HbS beta-plus thalassemia. The beta-zero form would produce no HbA at all, and the generic label HbS beta-thalassemia doesn’t specify whether HbA is present. HbC disease is a different disorder altogether.

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