What is the basic hemoglobin defect in the thalassemias?
A) One of the globin chains has an amino acid substitution.
B) A structurally normal globin chain is absent or produced at lower levels.
C) Heme is produced at a lower concentration.
D) Iron is not incorporated into the protoporphyrin ring to form heme.
Correct Answer:
Verified
Q2: Which of the following is the primary
Q3: A patient with
Q4: Which of the following is useful in
Q5: All of the following can distinguish
Q6: Which of the following is true of
Q8: What finding is present in all types
Q9: Homozygous a-thalassemia (--/--)has what clinical outcome?
A)incompatible with
Q10: Why are infants with b-thalassemia major not
Q11: Which of the following can help
Q12: Hb Barts is composed of
A)
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