Multiple choice

Which of the following statements are false?

  1. All T cells originate from haematopoietic stem cells in the bone marrow.
  2. All the blood grouping reactions are precipitation reactions.
  3. Idiotypic determinants of an antibody are associated with the variable region.
  4. The basis for blue-white screening with PUC vectors is intergenic complementation.

  1. Only 1 and 2

  2. Only 1 and 4

  3. Only 2 and 3

  4. Only 2 and 4

  5. Only 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct answer. Both the statements are false. All the blood grouping reactions are agglutination reactions. The basis for blue-white screening with PUC vectors is intraallelic complementation.

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