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Question
Why are color-blindness and thalassaemia categorised as Mendelian disorders? Write the symptoms of these diseases seen in people suffering from them.
Solution
Thalassaemia and colour blindness are categorised as Mendelian disorders because these are determined by alternation or mutation in a single gene. Symptoms of thalassaemia: The main symptoms of thalassaemia are anaemia, jaundice, hepatosplenomegaly, cardiac enlargement and skeletal deformities Symptoms of colour blindness: The main symptom of colour blindness is the inability of certain human beings to distinguish red and green colour.
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