Mohan Lal Sukhadia University (MLSU) 2001 ZOOLOGY - Third - Heredity and Genetics - Question Paper

1
Second Year exam of the
Three Year Degree Course, 2001
ZOOLOGY
Third Paper
(Heredity and Genetics)
Time : three Hours
[ Maximum Marks :50]
Attempt any 5 questions,
selecting at lowest 1 ques. from every unit,
All ques. carry equal marks.

UNIT – I

1. define structure of Chromosome:
(a) when observed under light microscope
(b) when observed under electron microscope.
OR

2. define these stages of cell cycle :
(a) Initial growth period
(b) 2nd growth period.

UNIT-II
3. Giving suitable example, define sex-linked
inheritance in drosophila.

4. Differentiate ranging from :
(a) Sex limited gene and sex influenced gene.
(b) Complete sex linkage and incomplete sex linkage.

UNIT-III

5. Draw subsequent diagram of different stages of meiosis
showing situation of chromosomes:
(a) Pachytene
(b) Diplotene
(c) 1st metaphase
(d) 1st anaphase
(e) 2nd metaphase
(f) 1st telophase

6. Write notes on :
(a) Down syndrome
(b) Klinfelter's syndrome
(c) Turner's syndrome

UNIT-IV
7. What do you understand by gene mutation?
Differentiate ranging from somatic and germ mutations.

8. What do you understand by chromosomal mutation?
Differentiate ranging from chromosomal number and
chromosomal aberrations.

UNIT-V

9. What do you understand by genetic engineering?
define different steps of formation of recombinant DNA.

10. discuss :
(a) Triplet
(b) Chain initiation codon
(c) Chain termination codon

Earning:   Approval pending.