LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – ADVANCED ZOOLOGY & BIOTECH.
FIFTH SEMESTER – NOVEMBER 2010
AZ 5513 - GENETICS
Date : 03-11-10
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART – A
Answer ALL the questions
(10 X 2 = 20)
1. Define law of independent assortment.
2. Distinguish antigens from antibodies.
3. What are nucleoside and nucleotide?
4. Define non-disjunction.
5. What is transduction?
6. What is vector or cloning vehicle?
7. Define Hardy-Weinberg’s law.
8. What are sex-linked genes? Give example.
9. Differentiate eugenics from euthenics.
10. Define genetic engineering.
PART – B
Answer any FOUR of the following questions
(4 X 10 = 40)
11. Give an account of A,B,O blood groups and their inheritance.
12. Describe the metabolic disorders in man.
13. Briefly explain the structure of DNA and its replication.
14. Enumerate the lytic and lysogenic life cycles.
15. Describe the human karyotype and variations.
16. Explain germ cell storage, artificial insemination and amniocentesis.
PART – C
Answer any TWO of the following questions
(2 X 20 = 40)
17. Explain the evidences to prove DNA is the genetic material.
18. Define interaction of genes. Explain the following modified ratios of dihybrid cross
a) 12 : 3 : 1
b) 9 : 7
c) 15 : 1
19. Describe Hardy-Weinberg law of equilibrium and elaborate the factors affecting the
equilibrium.
20. Give an account of positive and negative eugenics and add a note on euthenics.
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