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JIPMER2009ZoologyPrinciples of Inheritance and Variation

Jumping genes in maize were discovered by

Options

  1. AHugo de Vries
  2. BBarbara McClintock
  3. CT H Morgan
  4. DMendel

Correct answer

B. Barbara McClintock

Step-by-step solution

'Jumping genes' or movable genetic elements were discovered by 'Barbara McClintock' (1902-92) in maize. These 'controlling elements' could move from one location to another on the chromosome. Barbara McClintock got the Nobel Prize for these genetic elements (Ds=Dissociation gene, Ac = Association gene) which can jump to any chromosome from their original location on chromosome. The term 'transposon' was introduced by R W Hedges and A E Jacob (1974) to these genetic element (jumping gene) Hugo de Vries introduced th

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