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

Maharashtra 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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