DISTANCE EDUCATION
M.Sc. (Zoology) DEGREE EXAMINATION, MAY 2018.
GENETICS AND EVOLUTION
Time Three hours Maximum 100 marks
SECTION A — x 8 40 marks)
Answer any FIVE of the following questions, each in
about 300 words.
1. Explain the law of segregation and its consequences with
the help of a suitable example.
2. Make a note on chromosome mapping.
3. What is mutation? Briefly explain the various types of
spontaneous mutations.
4. Write a short note on the following:
Point mutation Frame-shift mutation.
5. Define operon. Explain the gene regulation through
operon model.
6. Explain the lamarckism.
7. Differentiate allopatric and sympatric speciation.
8. Give a short note on phylogenetic trees in molecular
genetic studies and its applications.
Sub. Code
13
DE-4167
2
Sp 1
SECTION B — × 15 60 marks)
Answer any FOUR of the following questions, each in
about 500 words.
9. Discuss in detail about the origin, types, causes and
significance of polyploidy.
10. Define linkage, Describe the different types of linkage
and discuss.
11. Write an essay on inborn errors of metabolism with
suitable examples.
12. Discuss the role of genes in development and
differentiation with examples.
13. Give an account on the genetic regulation of development
and differentiation in Zebrafish.
14. Define polymorphism. Describe various types of
polymorphism and the mechanisms that are responsible
for them.
15. Give a detailed account on assessment of molecular
variation.