True about DNA polymerase in eukaryotes: (PGI June 2008)
Ans: A (Components are a,b,d,e; B (b a/w repair) & C (g a/W repair) At least five eukaryotic DNA polymerase have been identified and categorizedTable (Lippincott's): Activities of eukaryotic DNA polymerase 3'- 5' exonuclease activityPolymeraseFunctionProofreadingPol aQ Contain PrimaseQ Initiates DNA synthesis-Pol bQ RepairQ-Poly g Q Replicates mitochondrial DNA+Pol d Q Elongates leading strands & oka- Zaki fragments+Pol e Q repair+
Components are a, b, g, D & e
b associated with repair
g associated with repair
D associated with synthesis of mitochondrial DNA