What is correct for blood group O?
Correct answer: A. No antigens but both A and B antibodies are present
- A. No antigens but both A and B antibodies are present
- B. A antigen and B antibody present
- C. Antigen and antibody both absent
- D. A, B antigens and A, B antibodies present
Explanation
Blood group O has no antigens, but both anti-A and anti-B antibodies in the plasma.
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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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