Once the pattern found after one round of replication was observed, Meselson and Stahl could be confident of which of the following conclusions?
1. Replication is semi-conservative.
2. Replication is not dispersive.
3. Replication is not semi-conservative.
4. Replication is not conservative.
The main enzyme for DNA replication is
(a)DNA-dependent RNA polymerase
(b) RNA-dependent DNA polymerase
(c) DNA-dependent DNA polymerase
(d) RNA-dependent RNA polymerase
The energy for the DNA replication comes from
(b) Deoxyribonucleotides triphosphates
(d) phosphorylation of ATP
Which of the following is incorrect for DNA polymerase?
(a)template dependent enzyme
(b)highly efficient enzyme
(c)high degree of accuracy
(d)template independent enzyme
which of the following purposes are not served by Deoxyribonucleoside triphosphates
(a) act as substrate
(b)act as energy source for replication
(c)act as enzyme cofactors
(d)act same as ATP
The small opening of the DNA helix where replication occurs is known as
The template of DNA on which discontinuous replication occurs has polarity
(b)3’ to 5’
(c)both a and b
(d)None of these
The discontinuously synthesised fragments are joined later by
(a)DNA polymerase III
(d)DNA polymerase I
In eukaryotes, the replication of DNA takes place
(a) at S-phase of the cell cycle
(b)before G2 and after G1phase of the cell cycle
(c) at M phase
(d)Both a and b
If cell division wouldn’t occur after DNA replication then cell will have
(a) chromosomal abberation
(d)Both b and c