Sickle cell anaemia has not been eliminated from the African population because:

1. It is controlled by recessive genes

2. It is not a fatal disease

3. It provides immunity against malaria

4. It is controlled by dominant genes

Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 57%
Level 3: 35%-60%
AIPMT - 2006
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
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The genetic change shown in the given figure shows the pathogenesis of:

 

1. Phenylketonuria 2. Cystic fibrosis
3. Sickle cell anemia 4. Thalassemia

Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 89%
Level 1: 80%+
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital

Given below is the initial amino acids of the beta chain of a haemoglobin molecule. What will be true about this haemoglobin molecule?

1. The RBCs carrying this molecule will undergo sickling at a high oxygen tension
2. The RBCs carrying this molecule will undergo sickling at a low oxygen tension
3. There will be a quantitative decrease in the synthesis of this molecule
4. This is the normal beta chain of the haemoglobin molecule
Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 57%
Level 3: 35%-60%
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital

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