Which one of the following conditions though harmful in itself, is also a potential savior from a mosquito-borne infectious disease?
Correct answer: B. Sickle cell anaemia
- A. Thalassaemia
- B. Sickle cell anaemia
- C. Pernicious anaemia
- D. Leukaemia
Explanation
Thalassemia is a genetic blood disorder but is not associated with protection from mosquito-borne diseases. Sickle cell anemia, while harmful in itself, provides some protection against malaria, a mosquito-borne infectious disease. Pernicious anemia is an autoimmune condition but is not related to protection from mosquito-borne diseases. Leukemia is a type of blood cancer and is not associated with protection from mosquito-borne diseases. The correct answer in this context is "b. Sickle cell anemia." This condition can be harmful but offers some protection against malaria, making it a potential savior from this mosquito-borne infectious disease.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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