Question

42. Hemochromatosis, sickle cell anemia, down syndrome are examples of
a) Diseases as a result of complications due to HIV
b) Dysfunctional gene behaviour caused due to mutation
c) Health hazards as a result of increased use of GM crops
d) Diseases where no new cases have been reported since year 2000
ಹೀಮೋಕ್ರೋಮ್ಯಾಟೋಸಿಸ್, ಸಿಕಲ್ ಸೆಲ್ ಅನಿಮಿಯಾ, ಡೌನ್ ಸಿಂಡೋಮ್‌ಗೆ ಉದಾಹರಣೆಗಳು
a) HIV ಯ ತೊಡಕಿನಿಂದ ಉಂಟಾಗುವ ಖಾಯಿಲೆಗಳು
b) ಉತ್ ಪರಿವರ್ತನೆಯಿಂದ ತಳಿಯ ವರ್ತನೆಯನ್ನು ನಿಷ್ಕ್ರಿಯಗೊಳಿಸುತ್ತದೆ
c) GM cropನ ಅತಿ ಬಳಕೆಯಿಂದ ಉಂಟಾದ ಆರೋಗ್ಯ ತೊಂದರೆ (ಸಮಸ್ಯೆ)
d) 2000 ವರ್ಷದಿಂದ ಯಾವುದೇ ಹೊಸ ಖಾಯಿಲೆಗಳು ವರದಿಯಾಗಿಲ್ಲ
Ty

Answer 1

Answer:

Option B- Disfunctional gene behaviour caused due to mutation.

Explanation:

Answer 2

Hemochromatosis, sickle cell anemia and Down's syndrome are examples of diseases due to dysfunctional gene behaviour caused due to mutation.

Hemochromatosis

• It is a disease where an individual builds up large quantities of iron posing harm to normal body functions.
• This is because of inheritance of defective gene in an individual.

Sickle cell anemia also called sickle cell disease (SCD)

• It a disease where an individual has sickle shaped red blod cells (RBC).
• SCD is a group of inherited RBC disorder where the hemoglobin forms stiff rods unlike normal hemoglobin in healthy individuals

Down's syndrome

• It is a genetic disorder due to presence of extrachromosome 21  (either a part or entire chromosome).

All the given diseases are due to inheritance of defective genes. Hence, among other options the option b is correct.