CBSE
Jumping genes in maize were discovered by
Hugo de Vries
Barbara McClintock
T H Morgan
Mendel
DNA element with ability to change position is called
cistron
transposon
intron
recon
Repressor protein is produced by
regulator gene
operator gene
structural gene
promoter gene
Balbiani rings are the structural features of
allosomes
polytene chromosomes
autosomes
lampbrush chromosomes
Initiation codon is
UUU
UGA
AUG
UAG
Which of the following is not a Pyrimidine?
Thymine
Uracil
Guanine
Cytosine
A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis?
Introns
Exons
Both (a) and (b)
None of these
DNA mutiplication is called
translation
replication
transduction
transcription
The back bone of RNA consists of which of the following sugar?
Deoxyribose
Ribose
Sucrose
Maltose
Stop codons are
AUG, GUG
UAA, UGA, UAG
UAC, UGG
AGU, AGA, UAC