Cytogenetics Repair Dna Damage Recombinational Bypass 1 Online Exam Quiz
Cytogenetics Repair Dna Damage Recombinational Bypass 1 GK Quiz. Question and Answers related to Cytogenetics Repair Dna Damage Recombinational Bypass 1. MCQ (Multiple Choice Questions with answers about Cytogenetics Repair Dna Damage Recombinational Bypass 1
What is the structure of Rec A filament?
Options
A : Cylindrical
B : Straight
C : Like rolled beta sheet
D : Alpha helical
Homologous recombination can’t occur in which stage?
Options
A : G2
B : Bacterial fission
C : G1
D : S
Which of the following will be a marker of DSB?
Options
A : H2A
B : Gamma-P H2AX
C : H5G
D : Alpha-P H3BX
Which of the following is not true about NHEJ?
Options
A : In most of the cases, it is associated with loss of genetic material
B : Ku is present at a concentration as high as 400000 per cell
C : It strand invasion looks for micro-homology regions
D : The 3’overhang chewed up to chi sequence invades to search for homology
What is the role of Rec BCD in DSB repair?
Options
A : It helps in strand invasion
B : It chews off the flap
C : It helps to generate 3’ overhang
D : It helps by aligning the two homologous chromosomes
Which of the following is not true about ATM kinase?
Options
A : It is guided to the DSB site by MRN complex
B : It exits as inactive dimer
C : It is activated to monomer by another factor of DSB repair
D : It phosphorylates BRCA1 and BRCA2
Which of the following is not a sensor of DSB?
Options
A : Ku
B : P21
C : H2AX
D : P53
Which of the following is most flexible ligase?
Options
A : Ligase I
B : ERCCI
C : Ligase IV
D : Ligase X
Which of these is not a part of the tri protein complex in homologous DSB repair?
Options
A : MRE11
B : NBS1
C : RAD 51
D : RAD 50
Which of the following has both kinase and nuclease property?
Options
A : Pol Beta
B : Ku-PKC
C : Ku- pol gamma
D : Pol delta
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