B.Sc. II (Semester IV) (New CBCS) Examination, 2018
Biotechnology
cytogenetics and population genetics
Day and Date Thursday, 03-05-2018 Max. Marks 70
Time 10.30 a.m. to 1.00 p.m.
Instructions All questions are compulsory.
Figures to right indicate full marks.
Draw neat and labelled diagram wherever necessary.
1. Choose and write the correct answer from the given four alternatives 14
Cytologist who established the presence of 46 chromosomes are
J. H. Tjio and A. Lavan C. E. Ford and F. H. Crick
S. Makino and M. S. Sasakl J. D. Watson and F. H. Crick
Heterochromatin appears like Drumstick bodies in
Basophils Eosinophils
Monocytes Neutrophils
Genes located on the "Y" chromosomes are
Slave Genes Holandric Genes
Plasmagenes Guide Genes
Trisomy of chromosome 21 results in
Down's syndrome Edward's syndrome
Patau's syndrome Klienfelter's syndrome
The position of centromere in the "Y" chromosome is
Acrocentric Metacentric
Acentric Telocentric
In meiosis crossing over between the Homologous chromosome occurs
during stage.
Zygotene Leptotene
Pachytene Diplotene

Division of cytoplasm is called
Cytokinesis Karyokinesis
Mitosis Meiosis
Complete set of chromosome that an organism possess is called
Idiogram Pictogram
Karyotype Phenotype
The "X" chromosome is placed in of a human karyotype.
Group A Group B Group C Group D
10) Radocabbage is the result of
Triploid Tetraploid
Autopolyploid Allopolyploid
11) The transposons inserted themselves at certain position called
Target site Parent site
Hotspot Direct repeats
12) The fluctuation in Gene Frequency is called
Gene Pool Allele Frequency
Genetic drift Random drift
13) Barr Bodies in nucleus of male chromosome is
2 1 3 0
14) The number of Haploid chromosome in peaplant is
4 23 7 8
2. Solve any seven of the following 14
Define Mutant.
Define Transposition.
Define slave genes.
Define polyploidy.
Define Range.
Define migration.
What is AME's Test
What is genetic drift
Give examples of transposons in drosophila melanogastor.
3. Attempt any two of the following 10
Describe the structure of chromosome with a neat labelled diagram.
Write in detail about spontaneous and induced mutation with
examples.
Write in detail about detection of mutant.
Solve 4
Explain process of Mitosis and add a note on its significance.
4. Attempt any two of the following 14
Write in detail about the numerical changes in chromosome.
Describe in detail about the Giant chromosomes with neat labelled
diagram.
Write in detail about minisatellites and its application.
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 genetic basis of evolution in Brassica and Wheat.