The blood group alleles start their expression at early embryonic stage and keep on expressing themselves till:
Correct answer: C. Death
- A. Puberty
- B. Old age
- C. Death
- D. Eighties
Explanation
The blood group alleles start expressing themselves during the early embryonic stage and continue to express throughout an individual's entire life, until death. This is because the antigens associated with blood groups are consistent markers present on the surface of red blood cells. Therefore, the correct answer is 'Death'. The other options are incorrect because they imply a cessation of antigen expression at specific life stages or ages, which is not the case for blood group antigens.
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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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