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Free download in PDF Molecular Basis of Inheritance GK Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
What is the name of process of addition of methyl guanosine triphosphate at the 5’ end of hn RNA?
[A]
Splicing
[B]
Capping
[C]
Tailing
[D]
None of these
(2)
Find out the wrong pair/s?
1. rRNA- RNA polymerase I
2. tRNA- RNA polymerase II
3. mRNA-RNA polymerase III
[A]
Both 1 & 2
[B]
Both 2& 3
[C]
Only 1
[D]
Only 2
(3)
Who proposed base pairing rules of DNA?
[A]
James Watson
[B]
Erwin Chargaff
[C]
Francis Crick
[D]
Frederic Griffith
(4)
Find out the incorrect pair
1. β- galactosidase – produces by z-gene
2. Permease – produces by y-gene
3. Transacetylase – produces by a-gene
[A]
1 & 2
[B]
2 & 3
[C]
All the statements
[D]
None of the statements
Answer: None of the statements
(5)
What is the length of DNA having 75 base pairs?
[A]
255A0
[B]
112.5 A0
[C]
750 A0
[D]
All of these
(6)
Which amino acids are present mostly in histone?
[A]
Arginine & Glycine
[B]
Glycine & Lysine
[C]
Arginine & Lysine
[D]
Arginine & Valine
Answer: Arginine & Lysine
(7)
During tailing which molecule is added at the 3’ and of hnRNA?
[A]
Poly adenylate residue
[B]
Methyl guanosine tri phosphate
[C]
Methyl guanosine di phosphate
[D]
Adenosine monophosphate
Answer: Poly adenylate residue
(8)
Which type of histones interconnect two adjacent nucleosomes?
[A]
H1& H2A
[B]
H2A & H2B
[C]
H1 only
[D]
H3 & H2A
(9)
Who discovered Lac operon?
[A]
Jacob & Monod
[B]
Jacob & Watson
[C]
Watson & Monod
[D]
Crick & Monod
(10)
Which is the largest gene in Man?
[A]
Dystrophin
[B]
Dystronin
[C]
Dystromin
[D]
Dystropin
(11)
What were the experimental materials used by Griffith to prove that DNA is the genetic material?
[A]
E-coli & Streptococcus pneumonia
[B]
Mice & Staphylococcus pneumonia
[C]
Mice, Streptococcus pneumonia & Staphylococcus pneumonia
[D]
None of these
Answer: Mice, Streptococcus pneumonia & Staphylococcus pneumonia
(12)
Which enzyme unwinds DNA double helix during DNA replication?
[A]
Topoisomerase
[B]
Helicase
[C]
SSB protein
[D]
DNA polymerase
(13)
Who experimentally proved that DNA is the genetic material?
[A]
Meselson& Chase
[B]
Hershey & Chase
[C]
Hershey & Meselson
[D]
Watson & Chase
(14)
Which codons are stop codons
[A]
UAA,UGC & UCG
[B]
UAA,UGA& UAG
[C]
UAA,UGC & UGA
[D]
UAA,UAG & UCG
(15)
Which amino acids are coded by the genetic codes GAG & GUG respectively
[A]
Glutamic acid & Glutamic acid
[B]
Glutaric acid & Valine
[C]
Glutaric acid & Proline
[D]
Glutamic acid & Valine
Answer: Glutamic acid & Valine
(16)
The special unwinding enzyme that helps in breaking the weak hydrogen bond which hold the two strands of DNA is
[A]
Primase
[B]
DNA ligase
[C]
DNA polymerase
[D]
Helicase
(17)
Transfer of DNA from one bacteria to another through cell to cell contact is known as
[A]
Conjugation
[B]
Transformation
[C]
Transduction
[D]
Transcription
(18)
The four nitrogen base sequence which form the code words for DNA Language is
[A]
UTAC
[B]
ACTU
[C]
AGCU
[D]
ATCG
(19)
DNA strands are antiparallel because of the presence of
[A]
H-bonds
[B]
Peptide bonds
[C]
Di sulphide bonds
[D]
Phospho diester bonds
Answer: Phospho diester bonds
(20)
Transformation experiments using pneumococcus bacteria led to the hypothesis that
[A]
RNA is the transfer link between DNA and protein synthesis
[B]
Chromosomes are made up of DNA
[C]
DNA is genetic substance
[D]
Bacteria has sexual reproduction
Answer: Chromosomes are made up of DNA
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