Assam University 2007 B.Sc Zoology TDC Part-II Honours --- Fourth - Question Paper

NTS-07/ ZOOH-4 /058

2007
ZOOLOGY (Honours)
Fourth Paper
(Cell Biology, Genetics, Biochemistry and Histoligy)
TDC Part-II (New Course)

Full Marks : 70
Pass Marks : 21

Time : three hours

The figure in the margin shows full marks for the ques.

ans all ques.


1. define with diagrams the structure and functions of mitochondria. 3+7=10
Or
Write notes on any 2 of the following: five x two = 10

(a) Types of RNA
(b) Heterochromatin
(c) Cell cycle

2. define lamp brush chromosome in detail with diagrams. 8
Or
What is genetic code? define the characteristic features of genetic code. 2+6 =8

3. Explain the complementary and supplementary effect of genes with suitable example. 5+5=10
Or
describe multiple allele. discuss the multiple alleles with reference to blood group in man.
2+8 = 10

4. What is chiasmata? define the mechanism of crossing over with suitable diagrams.
2+9+3=14
Or
Write notes on the following: 7+7 = 14
(a) Sex determination in Drosophila
(b) Gene mutation

5. What is vitamin? define the different water-soluble vitamins with special reference to their
role as coenzymes. 2+12= 14
Or
What is enzyme? define the factors affecting enzyme activity. Add a note on functions of
enzyme. 2+8+4=14

6. define with diagrams the histology of mammalian lungs and ovary. 7+7 = 14
Or
define with diagrams the structure of neuron and skeletal muscle fibre. 7+7=14

**********

Earning:   Approval pending.