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Molecular Basis of Inheritance

Multiple Choice Questions

121.

Balbiani rings are the structural features of

allosomes
polytene chromosomes
autosomes
lampbrush chromosomes

122.
Jumping genes in maize were discovered by

Hugo de Vries

Barbara McClintock

T H Morgan

Mendel

Barbara McClintock

Barbara McClintock discovered 'Jumping genes' or 'movable genetic elements' in maize. These can move from one location to another on the chromosome.

R W Hedges and A E Jacob (1974) introduced the term 'transposon' to jumping genes.

Hugo de Vries introduced the term 'mutation'.

T H Morgan proposed the 'gene theory' and crossing over.

Gregor Johann Mendel (1822- 1884) is known as the 'Father of Genetics'. It leads to the formulation of laws of inheritance which was carried out by Mendel.