CBSE
Which is called soluble RNA ?
rRNA
tRNA
mRNA
hnRNA
Mutation is more common when it is present in:
dominant condition
recessive condition
constant in population
none of the above
Sequence of DNA (Non- coding) is known as:
exon
intron
cistron
none
The process of multiplication of DNA from DNA is known as
replication
transversion
transcription
translation
The number of hydrogen bonds between adenine and thymine in a DNA molecule is :
two
three
four
eight
In DNA, which is absent :
Adenine
Thymine
Guanine
Uracil
In DNA, which is absent ?
Adenine
Guanine
Uracil
Cytosine
Enzyme required for transcription is
RNAse
Endonuclease
RNA polymerase
DNA polymerase
Which of the following constitute about 10-20% of total circular RNA?
m-RNA
r -RNA
t-RNA
hn -RNA
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 the above