4.Principles of Inheritance and Variation
normal

સિકલસેલ એનીમિયા અને હન્ટીંગ્ટોન્સ કોરીઆ બંને ..........

A

વાઇરસ - સંબંધિત રોગો

B

બૅક્ટરિયા - સંબંધિત રોગો

C

કોજેનીટલ - અનિયમિતતા

D

પ્રદૂષણ-પ્રેરીત અનિયમિતતાઓ

(AIPMT-2006)

Solution

(c) : A congenital disorder is a medical condition that is present at birth. Congenital disorders can be a result of genetic abnormalities, the intrauterine environment, or unknown factors. Sickle cell disease [a group of genetic disorders caused by sickle haemoglobin $(HbS)$. $HbS$ molecules tend to clump together, making red blood cells sticky, stiff and more fragile and causing them to form into a curved, sickle shape] and Huntington’s chorea (an inherited disorder characterised by degenerative changes in the basal ganglia structures, which ultimatelyresult in a severely shrunken brain and enlarged ventricles, abnormal body movements called chorea and loss of memory) are congenital disorders.

Standard 12
Biology

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