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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

123.

DNA element with ability to change position is called

cistron
transposon
intron
recon

124.

Initiation codon is

125.
DNA mutiplication is called

translation

replication

transduction

transcription

replication

DNA multiplication takes place by replication at S- phase of interphase during cell cycle. It is semi- conservative in nature.

Transcription is the mode by which DNA passes its genetic information to mRNA. It is the first step in protein synthesis which takes place in nucleus of eukaryotic cells.

Translation is the synthesis of a chain of polypeptide by mRNA. It takes place at the site of ribosomes and involves three steps- Initiation, Elonagtion and Termination.

Transduction is the transfer of genes from one bacterial cell to another by means of a virus.