When are Rh antibodies produced in Rh-ve persons?
Correct answer: C. After exposure to Rh antigen
- A. Naturally before birth
- B. Naturally after birth
- C. After exposure to Rh antigen
- D. After exposure to Rh antibodies
Explanation
Rh antibodies are produced in Rh-negative (Rh-ve) individuals when they are exposed to Rh-positive (Rh+ve) blood, which contains the Rh antigen. This can occur in the following situations:1. Blood transfusion: Receiving Rh+ve blood can trigger the production of Rh antibodies in an Rh-ve person.2. Pregnancy: An Rh-ve mother carrying an Rh+ve fetus can be exposed to Rh+ve blood during delivery or miscarriage, leading to antibody production.3. Accidental exposure: In rare cases, exposure to Rh+ve blood through injuries or medical procedures can also trigger antibody production.Rh antibodies are not produced naturally before or after birth, but rather as an immune response to exposure to the Rh antigen.
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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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