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

Rajasthan 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 - IBi

Individual 2 - IAi

(One of them at least is definitely heterozygous).

  1. Individual 5 - Both glycoprotein A and glycoprotein B.

Individual 9 - No glycoprotein,

  1. Individual 3 - IBi

Individual 4 - 1Ai

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