Download PTU B.Sc-Agriculture 2020 March 3rd Sem 72554 Introduction To Genetics Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) B.Sc-Agriculture 2020 March Previous Question Papers

1 | M-72554 (S2)-494
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(Agriculture) (2014 to 2018)/ B.Sc. (Hons.)(Agriculture)
(Sem.?3)
INTRODUCTION TO GENETICS
Subject Code : BSAG-304
M.Code : 72554
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Define or briefly describe the following :
a) Transversion
b) Turner?s syndrome
c) Polytene chromosomes
d) Lamp brush chromosomes
e) B-DNA
f) Synaptonemal complex
g) Frameshift mutation
h) Lethal gene
i) Nucleosome
j) XXXY condition

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1 | M-72554 (S2)-494
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc.(Agriculture) (2014 to 2018)/ B.Sc. (Hons.)(Agriculture)
(Sem.?3)
INTRODUCTION TO GENETICS
Subject Code : BSAG-304
M.Code : 72554
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
1. Define or briefly describe the following :
a) Transversion
b) Turner?s syndrome
c) Polytene chromosomes
d) Lamp brush chromosomes
e) B-DNA
f) Synaptonemal complex
g) Frameshift mutation
h) Lethal gene
i) Nucleosome
j) XXXY condition

2 | M-72554 (S2)-494
SECTION-B
Differentiate between :
2. Penetrance and Expressivity
3. Sex linked and Sex limited Traits
4. Inducible and Repressible operon
5. Physical mutagens and Chemical mutagens
6. Paracentric inversion and Pericentric inversion

SECTION-C
7. Discuss in detail the process of translation (draw neat and well labeled diagram). Also
discuss the characteristic features of genetic code.
8. a) Prove that DNA is a genetic material by citing a suitable experimental evidence.
b) Explain cytoplasmic inheritance with suitable examples (any two).
9. a) Discuss the evolutionary history of cotton.
b) Explain the mechanisms (any two) of crossing over.






NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.

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