B.Sc. II (Biotechnology) (Semester III) (Old CGPA) Examination, 2018
Cyto-genetics and Population Genetics
Day and Date Wednesday, 25-4-2018 Max. Marks 70
Time 2.30 p.m. to 5.00 p.m.
Instructions All questions are compulsory.
Figures to the right indicate full marks.
Draw neat labeled diagram wherever necessary.
1. Choose and write a correct answer from given four alternatives 14
Heterochromatin appears like drumstick bodies in
Basophils Eosinophils Monocytes Neutrophils
Polytene chromosome are the permanently chromosomes.
Telophase Anaphase Prophase Metaphase
Slave gene increase the rate of synthesis.
DNA RNA Protein cDNA
Chromonemal fibrils which can be easily separable from their coil is
called
Paranemic Plectonemic
Supercoil Double helix coil
Cytologist who established the presence of 46 chromosomes is
J. H. Tjio and A. Lavan C.E. Ford and J.L. Hammerton
S. Makino and M.S. Sasakl J.D. Watson and F.H. Crick
Fluctuation in gene frequency is called
Gene pool Allele frequency
Genetic drift Random Drift
LINES stands for
Long Interspersed Nuclear Sequences
Large Interspersed Nuclear Sequences
Long Interrelated Nuclear Sequences
Large Interrelated Nuclear Sequences
Mutual exchange of chromosome segment between non-homologous
chromosomes is called
Duplication Deletion Translocation Inversion
The largest value is 175 and smallest value is 70, so the range of the number is
100 70 105 175
10) The Haploid chromosome number in Allium cepa is
6 8 14 16
11) The "Y" chromosome is placed in of a human Karyotype.
Group B Group E Group G Group F
12) The commonly used absolute measure of dispersion is
Variance Range
Mode Standard deviation
13) The Mutagenecity of various chemicals is investigated by
AME's test Replica plate technique
Gradient plate technique CLB technique
14) Transposition event involves process.
Recombination
Transposition
Replication
Both recombination and replication
2. Solve any seven of the following 14
Define Telomeres.
What is induced mutation
Define constitutive heterochromatin.
Define transposons.
What are base analogues
Define gene frequency.
Define sex chromosomes.
Define Endomitosis.
Define Histone.
3. Attempt any two of the following 10
Describe the structure of chromosome with a neat diagram.
Write in detail about the Mutagenic agents and its effect.
Write about Mini Satellite DNA.
Explain about the organization of Eukaryotic chromosome. 4
4. Attempt any two of the following 14
Explain the process of meiosis with neat diagram.
Explain in detail the structural alteration chromosome with neat diagram.
Describe different types of bacterial transposons with neat diagram.
5. Attempt any two of the following 14
Write in detail about Hardy Weinberg Law and its application.
Describe multiple factor hypothesis with suitable examples.
Describe the Giant chromosomes with a neat labelled diagram.