CBSE
Multiple Choice QuestionsWhich codon is not an indicator of completion of protein synthesis?
UAG
AUG
UAA
UGA
Central dogma in molecular biology is
RNA DNA Protein
DNA RNA Protein
RNA Protein DNA
DNA Protein RNA
Formation of polysome does not require
rRNA
mRNA
tRNA
snRNA
If the sequence of bases in the coding strand of a double-stranded DNA is 5'-GTTCGAGTC-3', the sequence of bases in its transcript will be
5'-GACUCGAAC-3'
5'-CAAGCUCAG-3'
5'-GUUCGAGUC-3'
5'-CUGAGCUUG-3'
Genes which are located only in the X-chromosome are known as
epistasis genes
holandric genes
operator genes
antiepistasis genes
Nucleosome contains
Only histone protein
Both DNA and histone protein
Only DNA
Both DNA and RNA
What would be the percentage of thymine in a double stranded DNA sample which contains 20% cytosine of the total bases?
10%
20%
30%
40%
What will be the percentage of guanine in a DNA molecule having 20% adenine?
20%
30%
40%
60%
Which enzyme/s will be produced in a cell in which there is a non-sense mutation in the lac Y gene?
- galactosidase
Lactose permease
Transacetylase
Lactose permease and transacetylase
The diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C
A - transcription, B - replication, C - James Watson
A - translation, B - transcription, C - Erevin Chargaff
A - transcription, B - translation, C - Francis Crick
A - translation, B - extension, C - Rosalind Franklin
