GPB - 502 (2+1) Principles of Cytogenetics

UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
COLLEGE OF AGRICULTURE, RAICHUR

GPB - 502 (2+1): Principles of Cytogenetics
Announced Quiz

Time: 1 hour
Max. Marks: 15

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Q.I. Define (5 × 1 = 5 Marks)

1. C-value paradox

2. Nuclear membrane

3. Cot value

4. Cytoplasmic inheritance

5. Plasmids

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Q.II. Fill in the blanks (0.5 × 20 = 10 Marks)

1. Eukaryotic chromosomes having Nucleolus are actively involved in ribosomal biosynthesis.

2. The number of nuclear pores on nuclear membrane is directly correlated with transcriptional activity of a cell.

3. C-value indicates the amount of DNA found in haploid genome measured in picogram.

4. Generally, the rate of transcription in prokaryotes is 1000 bp/s, which is more than eukaryotic cells.

5. The nuclear pores are associated with Annuli protein to form pore complex.

6. Episomes are small additional circular DNA capable of integration with host genome.

7. Centromere is also known as Kinetochore.

8. The unique DNA sequences represent 2% portion of DNA.

9. The histone proteins are rich in Lysine and Arginine.

10. The typical "beaded string" structure of DNA is because of Nucleosome solenoid model having histone proteins with DNA.

11. Repetitive portion of DNA will have lesser Cot values because of earlier re-association.

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Best of luck!