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CUET-UG Biology Test: Genetics
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CUET-UG Biology Test: Genetics
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25 Questions

1. Choose the incorrect pair -'
2. The Okazaki fragments in DNA chain
3. Select incorrect match
4. With regard to mature mRNA in eukaryotes, which of the following is true?
5. Refer to the given steps of DNA replication. (i) Exposure of DNA strands (ii) Synthesis of RNA primer (iii) Activation of deoxyribonucleotides (iv) Chain formation (v) Base pairing (vi) Proof reading and DNA repair (vii) DNA polymerase attaches at ori site
Select the correct sequence of DNA replication.
6. Discontinuous synthesis of DNA occurs on one strand because -'
7. The protein of DNA, which contains information for an entire polypeptide is called as -'
8. Who discovered DNA polymerase?
9. In E-coli, the lac operon gets switched on when
10. The human chromosome with the highest and least number of genes in them are respectively- [NCERT Exemplar]
11. Promoter and terminator flanks the
12. In the absence of lactose, the operator gene of lac-operon is suppressed by genetic material
13. In the Lac operon system, β-galactosidase is encoded by
14. The enzyme DNA-dependent RNA polymerase catalyses the polymerisation reaction in direction
15. What does A and B represent in the given representation?
A B
16. A gene of operon which forms the repressor protein is
17. Read the following statements and select the correct option - (i) Loosely packed and lightly stained regions of chromatin are called heterochromatin. (ii) Densely packed and dark stained regions of chromatin are called euchromatin. (iii) A typical nucleosome contains 200 bp of DNA helix.
18. DNA replication enzymes are given below. Select their correct sequence in DNA replication- (i) Helicase (ii) Primase (iii) SSB (iv) DNA ligase (v) DNA polymerase
19. Which of the following are the functions of RNA?
20. In a bacterium when RNA-polymerase binds to the promoter on a transcription unit during transcription, it
21. Given diagram represents the schematic structure of a transcription unit with some parts labelled as A, B, C, and D. Select the option which shows its correct labelling. A B C D
22. Control of gene expression takes place at the level of
23. Peptide synthesis in a cell takes place in
24. RNA polymerase II is responsible for the transcription of
25. Triplet UUU codes for

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