2020
BSc (VI Semester) Examination
ZOOLOGY
Paper : ZOO/T6/363
( Molecular Biology and Recombinant Technology )
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
1. Answer the following questions : 2×5=10
(a) What is palindromic sequence?
(b) Define operon concept.
(c) What is intron?
(d) Name two stop codons.
(e) What is reverse transcription?
2. Write short notes on any four of the following : 5×4=20
(a) Difference between prokaryotic and eukaryotic mRNA
(b) Restriction endonuclease
(c) Bt-Cotton
(d) Rho-dependent transcription termination
(e) RNA polymerase
(f) Okazaki fragments
3. Answer any five from the following : 10×5=50
(a) With suitable illustration, write the mechanism of protein synthesis.
(b) Write briefly about the structure of different forms of DNA.
(c) “DNA replication is semi-conservative.” Explain the statement with experimental evidence.
(d) Define marker gene and its utility during gene cloning procedure.
(e) Write briefly about DNA recombinant technology with suitable diagram.
(f) Discuss the various applications of genetic engineering in the field of medicine.
(g) Write in brief about the positive and negative regulations of Lac Operon in bacteria.
