Question

Jumping genes in maize were discovered by

• A. Hugo de Vries
• B. Barbara McClintock
• C. T. H Morgan
• D. Mendel

Answer 1

The correct option is B Barbara McClintock

Barbara McClintock, while working on chromosome breakage in maize, observed that a chromosome-breaking locus could change its position within a chromosome and discovered “jumping genes”.

Hugo de Vries studied inheritance of flower colour in evening primrose and called as the sudden and random appearance of new characters as mutation.

Morgan provided experimental proof of “chromosomal theory of inheritance”, first proposed by Sutton and Boveri, and also discovered linkage.

Mendel conducted hybridization experiments on garden pea plant, Pisum sativum and proposed “laws of inheritance” on the basis of his results.

Thus the correct answer is option B.