This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
In sickle cell trait, number of bands found in Hb – 
Select and explain. 
A. 2, B. 1, C. 4, D. 5
A: 2
Answer: A: 2 
Explanation: In hemoglobin electrophoresis, various types of hemoglobin move at varying speed.
In sickle cell trait (heterozygous state), there are two types of hemoglobin - HbS (40%) and HbA (60%). So, on electrophoresis, two different bands are produced.
In Homozygous state, almost all hemoglobin is HbS. So, a single band is produced.

Laboratory findings of sickle cell anaemia

Moderate to severe anaemia
Peripheral smear will show
Sickle cells                
Target cells
A positive sickling test with a reducing substance like sodium metabisulfite.
Howell - Jolly bodies because of autosplenectomy