Principle-Of-Inheritance-And-Variation Question 638
Question: Sickle cell anaemia is due to [CBSE PMT 1990]
Options:
A) Hormones are chemical messengers produced by endocrine glands that regulate various physiological processes in the body.
B) Viruses
C) Genes are segments of DNA that contain the instructions for building proteins and are responsible for the inheritance of traits.
D) Bacteria are single-celled microorganisms that can be found in a wide range of environments. They play essential roles in ecosystems, including decomposition, nutrient cycling, and symbiotic relationships with other organisms. Some bacteria are pathogenic, meaning they can cause diseases in humans, animals, and plants. However, many bacteria are beneficial and are used in industries such as food production, biotechnology, and medicine.
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Answer:
Correct Answer: B
Solution:
Sickle-cell anaemia is a genetic disease reported from African populations due to a molecular mutation of gene $ Hb^{A} $ on chromosome 11 which produces the $ \beta $ chain of adult haemoglobin.
BETA
