Multiple choice

Jumping genes in maize were discovered by

  1. Hugo De Vries

  2. Barbara McClintock

  3. T. H. Morgan

  4. Mendel

  5. -
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transposable elements (TEs), also known as jumping genes or transposons, are sequences of DNA that move (or jump) from one location in the genome to another. Maize geneticist Barbara McClintock discovered TEs in 1940s and for decades thereafter, most scientists dismissed transposons as useless or junk DNA.

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