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Principles Of Inheritance And Variation

Question
CBSEENBI12002802
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Both sickle cell anaemia and Huntington's chorea are

  • bacteria-related diseases

  • congenital disorders

  • pollutant-induced disorders

  • virus-related diseases

Solution

B.

congenital disorders

Both sickle cell anaemia and Huntington's chorea are congenital genetic disorders. Sickle cell anaemia was first opened by James Herrick (1904). In this disease the patient's haemoglobin level reduced to half of the normal and the RBCs become sickle shaped. A single mutation in a gene can cause sickle cell anaemia.
Huntington's chorea is caused by autosomal mutation which is dominant. The gene is present on chromosome number 4.

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