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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation3 Marks
Question

Study the pedigree chart given above, showing the inheritance pattern of blood groups in a family and answer the following questions:
  1. Give the possible genotypes of the individuals 1 and 2.
  2. Which antigen or antigens will be present on the plasma membranes of the RBCs of individuals 5 and 9?
  3. Give the genotypes of the individuals 3 and 4.
✓

Answer

  1. Individual 1 - $I^Bi$
Individual 2 - $I^Ai$

(One of them at least is definitely heterozygous).
  1. Individual 5 - Both glycoprotein A and glycoprotein B.
Individual 9 - No glycoprotein,
  1. Individual 3 -$I^Bi$
Individual 4 - $1^Ai$

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