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Free download in PDF GK Questions with Answers on Molecular Basis of Inheritance 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)
Which enzyme is used to remove the primer from the Okazaki fragment?
[A]
Endonuclease
[B]
RNase H
[C]
5’ exonuclease
[D]
Polymerase
(2)
Who of the following was not one of the scientists explaining the replicon model?
[A]
Francois Jacob
[B]
Sydney Brenner
[C]
Jacques Cuzin
[D]
Arthur Kornberg
(3)
The replicon model was first explained in the year ____________
[A]
1950
[B]
1957
[C]
1963
[D]
1968
(4)
The eukaryotic chromosome has a single replicon.
(5)
The replicon model comprises of an initiator and _______________
[A]
Replicator
[B]
Origin of replication
[C]
Dna A protein
[D]
AT rich DNA
(6)
Replicator is the synonym for origin of replication.
(7)
The initiator protein binds to a segment ____________ of the replicator sequence.
[A]
Upstream
[B]
Downstream
[C]
At the end
[D]
Within
(8)
Binding of the Dna A protein to the DNA is energy dependent.
(9)
Assembly of how many proteins make up the origin replication complex (ORC) in eukaryotes?
(10)
Which of the following proteins is not recruited by Dna A protein?
[A]
Dna A protein
[B]
Helicase
[C]
Dna C protein
[D]
SSB protein
(11)
Replication of chromosome occurs during the ____________ phase.
[A]
G1
[B]
S
[C]
G2
[D]
Division
(12)
It is important to replicate the DNA correctly and only once.
(13)
Selection of replicator occurs in ___________ phase.
[A]
G1
[B]
S
[C]
G2
[D]
Division
(14)
Activation of the origin of replication occurs in ____________ phase.
[A]
G1
[B]
S
[C]
G2
[D]
Division
(15)
The replicator selection is mediated by the formation of pre-replicative complex. It comprises of _________________
[A]
ORC and the initiator protein
[B]
ORC and helicase
[C]
A helicase loader and a helicase
[D]
An ORC, two helicase loaders and a helicase
Answer: An ORC, two helicase loaders and a helicase
(16)
The pre – RCs are auto-activated as soon as the cell enters the S – phase.
(17)
Which of the following is wrong about the cyclin dependent kinases?
[A]
Phosphorylates enzymes
[B]
Activates pre – RCs
[C]
Promotes formation of new pre – RCs
[D]
Activates in the S – phase
Answer: Promotes formation of new pre – RCs
(18)
Active cyclin dependent kinase is absent in ____________ phase.
[A]
G1
[B]
S
[C]
G2
[D]
Division
(19)
A sample of DNA contains 20% of adenine. What is the quantity of guanine present?
[A]
30
[B]
20
[C]
15
[D]
25
(20)
Who proposed the concept of reverse transcription?
[A]
Crick & Temmin
[B]
Temmin & Baltimore
[C]
Watson & Chargaff
[D]
Chargaff
Answer: Temmin & Baltimore
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