Advertisements
Advertisements
प्रश्न
E. coli cell grown on 15N medium are transferred to 14N medium and allowed to grow for two generations. DNA extracted from these cells is ultracentrifuged in a cesium chloride density gradient. What density distribution of DNA would you expect in this experiment?
पर्याय
One high and one low density band.
One intermediate density band.
One high and one intermediate density band.
One low and one intermediate density band.
Advertisements
उत्तर
One low and one intermediate density band.
संबंधित प्रश्न
Enlist the names of enzymes used in semiconservative replication of DNA?
______ heavy isotope was used by Meselson and Stahl during their experiment.
Enzyme ______ brings about the DNA unwinding by breaking weak hydrogen bonds in the vicinity of origin.
Identify the CORRECT combination of statements with respect to DNA synthesis.
I. Always the direction of DNA polymerization 5' → 3' when referring to the polarity of strand being synthesized.
II. DNA ligase forms hydrogen bonds between two newly synthesized DNA strands.
III. DNA polymerases on their own cannot initiate the process of replication.
IV. DNA polymerase can catalyse polymerization in both 5'→ 3' and 3'→ 5' direction.
Nucleolus is a major center for:
Okazaki segments are formed during ______.
During the replication of DNA, the separated strands are prevented from recoiling by using ______.
In the experiment of Meselson and Stahl, the heavy DNA was separated from light DNA by centrifugation in ______.
Draw a suitable diagram of replication of eukaryotic DNA and label any three parts.
Enzyme involved in synthesis of RNA primer.
