BOT/V/CC/13 Student's Copy
2 0 1 8
CBCS
5th Semester
BOTANY
SEVENTH PAPER
Cytogenetics, Plant breeding and Bioinformatics
Full Marks 75
Time 3 hours
PART A—OBJECTIVE
Marks 25
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 10
Tick the correct answer in the brackets provided 1×10=10
1. An acrocentric chromosome will have
equal arms
almost equal arms
a very short and a very long arm
only one arm
2. The histones present in a nucleosome core are
H1, H2A, H2B and H4 H1A, H2, H3 and H4
H2A, H2B, H3 and H4 H1, H2, H3 and H4
3. The genomic formula of a monosomic is
2n 2n 2
2n 2 2n
/144 1 Contd.
4. When there is gain of one or more entire set of chromosome, the condition
is known as
duplication translocation
euploidy aneuploidy
5. Genetic map is also called
physical map
linkage map
centimorgan/centiMorgan
restriction map
6. Alleles are
alternate forms of the same gene
alternate forms of different genes
two different genes
many chromosomes
7. The term 'mutation' was coined by
de Vries Mendel
Morgan Darwin
8. Heterosis is the
induction of mutation
inferiority of hybrids over their parents
superiority of hybrids over their parents
None of the above
9. A bit has a binary value of
0 or 1 1 or 2
2 or 3 3 or 4
10. BLASTP is a search tool that compares a
protein query against a DNA database
protein query against a protein database
DNA query against a protein database
DNA query against a DNA database
BOT/V/CC/13/144 2 Contd.
SECTION—B
Marks 15
Write notes on the following 3×5=15
1. Paracentric and pericentric inversion
OR
Structure of chromosome
2. Allopolyploidy
OR
Autoallopolyploidy
3. Genetic map
OR
Multiple allelism
4. Transition
OR
Frameshift mutation
5. Bioinformatics
OR
Search tools
PART B—DESCRIPTIVE
Marks 50
The figures in the margin indicate full marks for the questions
1. Write short notes on any two of the following 5×2=10
Types of duplication
Types of translocation
Deletion
OR
Give a detailed account of the cytoskeleton of a cell. 10
BOT/V/CC/13/144 3 Contd.
2. Briefly describe any two of the following 5×2=10
Autopolyploidy
Segmental allopolyploidy
Sources of chromosomal anomalies
OR
What is aneuploidy? Mention the different types of aneuploidy present.
2+8=10
3. Write short notes on any two of the following 5×2=10
Plastid inheritance in Mirabilis ja lapa
Concept of karyotype
Quantitative inheritance
OR
Explain cytoplasmic male sterility with the help of a suitable diagram. 10
4. Briefly describe any two of the following 5×2=10
Pure line selection
Molecular basis of mutation
Hybridization
OR
Give an account of the different types of physical mutagens and the
mechanism of their action. 10
5. Write short notes on any two of the fol low ing 5×2=10
BLAST
Protein database
DNA database
OR
Describe DNA sequence alignment and analysis. 10