Statement I: | In prokaryotes, RNA polymerase is capable of catalysing the process of elongation during transcription. |
Statement II: | RNA polymerase associates transiently with 'Rho' factor to initiate transcription. |
Statement I: | In the lac operon, the z gene codes beta-galactosidase which is primary responsible for the hydrolysis of lactose into galactose and glucose. |
Statement II: | In addition of lactose, glucose or galactose can also induce lac operon. |
Statement I: | In eukaryotes, there are three RNA polymerases in the nucleus in addition to the RNA polymerase found in the organelle. |
Statement II: | All the three RNA polymerases in eukaryotic nucleus have different roles. |
List I | List II | ||
A. | Histones | I. | Loosely packed chromatin |
B. | Nucleosome | II. | Densely packed chromatin |
C. | Euchromatin | III. | Positively charged basic proteins |
D. | Heterochromatin | IV. | DNA wrapped around histone octamer |
1. | The codon is triplet |
2. | The code is nearly universal |
3. | The code has punctuations |
4. | Some amino acids are coded by more than one codon, hence the code is degenerate |
1. | C, B, D | 2. | A, D, E |
3. | C, D, E | 4. | A, B, C |
List-I | List-II | ||
1. | DNA fingerprinting | I. | M. Meselson and F. Stahl |
2. | Pneumococcus | II. | A Harshey and M. Chase |
3. | E.coli | III. | F. Griffith |
4. | Bacteriophage | IV. | Alec Jeffreys |
1. | A-IV, B-III, C-II, D-I | 2. | A-IV, B-III, C-I, D-II |
3. | A-II, B-III, C-I, D-IV | 4. | A-III, B-II, C-I, D-IV |