GPB - 502 (2+1) Principles of Cytogenetics

 

UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR
COLLEGE OF AGRICULTURE, RAICHUR

GPB - 502 (2+1) Principles of Cytogenetics

Time: 2 hour
Max. Marks: 30
ID No: PG16AGR8082

Final Theory Exam

Q. I. Define / Answer briefly (1 x 5 = 05.00)

1. Reciprocal translocation

2. Monohaploids

3. Parthenogenesis

4. Segmental allopolyploids

5. Crossing over

Q. II. Differentiate between (2.5 x 2 = 05.00)

1. Intra-chromosomal and inter-chromosomal translocations

2. Autopolyploids and allopolyploids

Q. III. Answer the followings (Any Four) (2.5 x 4 = 10.00)

1. Explain morphological and genetic effects of polyploids

2. Explain double reduction

3. Explain the methods to produce polyploids

4. Explain Bulbosum technique

5. Explain the correlation between Mendel’s principles with cytological events during cell division

Q. IV. Fill in the blanks (0.5 x 10 = 5.00)

1. ______ represents the amount of DNA found in haploid genome which is measured in _____.

2. Prokaryotic rate of transcription is _____ than eukaryotes.

3. Cytological events like formation of _____ indicate _____ nature.

4. The rate of achieving homozygosity is _____ in polyploids than their _____ counterparts.

5. Origin of trisomics is may due to _____ and _____ of chromosomes.

6. Ramage (1965) developed hybrid seed production techniques using _____ in Barley.

Q. V. Match the Scientists name with their discoveries/contributions (10 x 0.5 = 5.00)

Block A	Block B
1. Trisomic	1. 2n-2
2. Secondary Trisomics	2. 2n-1-1
3. Colchicine	3. Cotton
4. Double Monosomic	4. Triticale
5. Tetrasomic	5. Double haploids
6. Haploid inducing genes	6. 2n+2
7. Semigamy	7. 2n+1
8. Ovule culture	8. Haploids
9. Nullisomic	9. Neurospora crassa
10. Synthetic allopolyploids	10. 2x+1L.1L
	11. 'ig' in Maize
	12. 'hap' in Barley

best of luck