Which histone(s) are associated with the linker DNA of a nucleosome? Histone H1 Histone H3 Histones H2A and H2B Histone H4 TRUE ANSWER : ? YOUR ANSWER : ?
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%? Decreases Can not be compared Remains same Increases TRUE ANSWER : ? YOUR ANSWER : ?
The RNA primers used to initiate replication in E. coli are removed by helicase + ATP result in Okazaki fragments on leading strand are removed by Pol I are joined together by DNA ligase TRUE ANSWER : ? YOUR ANSWER : ?
What is the approximate size (in kb) of the E. coli genome? 5500 kilobase 6500 kilobase 3000 kilobase 4500 kilobase TRUE ANSWER : ? YOUR ANSWER : ?
DNA replication takes place in which direction? Randomly 3' to 5' Vary from organism to organism 5 'to 3' TRUE ANSWER : ? YOUR ANSWER : ?
DNA replication results in two DNA molecules such that each one contains a strand of the original one new DNA molecules 1 old molecule two completely new DNA molecules one new molecule of RNA TRUE ANSWER : ? YOUR ANSWER : ?
E.coli DNA polymerases II and III lack partially 5' → 3' exonuclease activity 5' → 3' exonuclease activity partially 5' → 3' endonuclease activity 5' → 3' endonuclease activity TRUE ANSWER : ? YOUR ANSWER : ?
What bands will be observed in a cesium chloride gradient after two rounds of replication? One light and one medium band One medium band One light, one medium and one heavy band One medium and one heavy band TRUE ANSWER : ? YOUR ANSWER : ?
How does ethidium bromide interact with DNA? It does not interact It intercalates between bases It binds to phosphate It binds to adenine TRUE ANSWER : ? YOUR ANSWER : ?
The accepted hypothesis for DNA replication is evolutionary theory dispersive theory conservative theory semi-conservative theory TRUE ANSWER : ? YOUR ANSWER : ?