Q. No.In E. Coli, during lactose metabolism, the repressor binds to:
1. Regulator gene
2. Operator gene
3. Structural gene
4. Promoter gene
If the DNA percentage of thymine is 20%, then what is the percentage of guanine?
| 1. | 20% | 2. | 40% |
| 3. | 30% | 4. | 60% |
Out of 64 codons, 61 codons code for 20 types of amino acids. This is often called:
1. Degeneracy of genetic code
2. Overlapping of gene
3. Wobbling of codon
4. Universality of codons
Jacob and Monad studied lactose metabolism in E.Coli and proposed the Operon concept. The Operon concept is applicable to:
1. All prokaryotes
2. All prokaryotes and some eukaryotes
3. All prokaryotes and all eukaryotes
4. All prokaryotes and some protozoans
Which of the following reunites the exon segments after RNA splicing:
1. RNA polymerase
2. RNA primase
3. RNA ligase
4. RNA proteases
The nucleus of a donor embryonal cell/somatic cell is transferred to an enucleated egg cell. Then after the formation of the organism, what shall be true:
| 1. | Organism will have extranuclear genes of the donor cell |
| 2. | Organism will have extranuclear genes from the recipient cell |
| 3. | Organism will have extranuclear genes of both donor and recipient cell |
| 4. | Organism will have nuclear genes of the recipient cell |
The method of DNA replication in which two strands of DNA separate and synthesize new strands is called:
1. Dispersive
2. Conservative
3. Semiconservative
4. Non-conservative
Living beings maintain continuity of life by:
| 1. | Adaptation |
| 2. | DNA–replication and its transfer in the next generation |
| 3. | RNA synthesis |
| 4. | None of the above |
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