Repair of double strand break made during meiosis in the yeast Saccharomyces cerevisiae (1) occurs mostly by non-homologous end joining. (2) occurs mostly using the sister chromatid as a template. […]
Tag: DNA REPAIR AND RECOMBINATION PYQ
DNA REPAIR AND RECOMBINATION PYQ
No posts found.
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
Recovery from Replication Fork Breakage Caused by Single-Strand Nick Requires Homologous Recombination
21.single -strand nick in parental DNA helix just ahead of a replication fork causesthe replication fork to break. Recovery from this calamity requires (1) DNA ligase (2) DNA primase (3) […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
Error-Free Repair of DNA Double-Strand Breaks Is Accomplished by Homologous Recombination
Error-free repair of double strand breaks in DNA is accomplished by (1) non-homologous end-joining (2) base excision repair (3) homologous recombination (4) mismatch repair Error-Free Repair of DNA Double-Strand Breaks: […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
sos-repair-mechanism-involves-recombination-understanding-dna-damage-responses
Among the following which repair mechanism involves recombination? (1) Photo active direct repair mechanism (2) SOS repair mechanism (3) Post replication repair mechanism (4) Nucleotide excision repair mechanism Which DNA […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
Meiotic Recombination Does Not Involve Newly Replicated Identical DNA Duplexes: Key Features Explained
A meiotic recombination does not involve (1) formation of Holliday junction. (2) newly replicated identical DNA duplexes. (3) gene conversion. (4) crossover and non-crossover. Meiotic Recombination: What It Involves and […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
Predicting Agarose Gel Band Pattern After Repair of G:T Mismatch at HindIII Site in 6.4 Kb Plasmid Digested with HindIII and EcoRI
A 6.4 Kb plasmid DNA has two restriction endonuclease sites, HindIII and EcoRI. Complete double digestion of the plasmid with both the enzymes yields two fragments of 3.1 and 3.3 […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
DNA Damage Responses Explained: Damage Bypass, Reversal, and Removal with Key Repair Proteins
The complex responses to different types of DNAdamage in both prokaryotes and eukaryotes fall into three main categories: (i) damage bypass (ii) damage reversal (iii) damage removal Many repair proteins […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
Nucleotide Excision Repair in E. coli: Roles of Uvr Proteins, UvrD, and DNA Polymerase I Explained
Excision repair systems replace a short stretch of DNA around the site of damage. The following statement are made about nucleotide excision repair in E. coli: (A) UvrB homodimer creates […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
Xeroderma Pigmentosum Is Caused by Defects in Nucleotide Excision Repair Mechanism
Genetic disorder Xeroderma pigmentosum is due to defect in (1) Base excision repair mechanism (2) Nucleotide excision repair mechanism (3) Direct repair mechanism (4) DNA replication mechanism Xeroderma Pigmentosum: A […]
CSIR NET Life Science Previous Year Questions and Solution on DNA REPAIR AND RECOMBINATION
UvrABC Repair Mechanism Repairs DNA Damage Caused by Bulky Chemical Adducts
The ‘Uvr ABC’ repair mechanism is involved in repairing (1) missing bases. (2) strand break. (3) cross linked strands. (4) DNA damage caused by “bulky” chemical adducts. The UvrABC Repair […]
