Master of Science I (Genetics) Examination: Oct/Nov 2016
Semester I (Old CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SQ
445
Monday
21/11/2016
10:30 AM
to
01:00 PM
Cytogenetic and Genome
Organization
C
III
Instructions: Section I is compulsory.
From section II attempt any four.
All questions carry equal marks.
Figures to the right indicate full marks.
Draw neat and labeled diagrams wherever necessary.
Total Marks: 70
SECTION 1
Q.1 Rewrite the following sentences by using correct alternatives. 07
Human telomeric sequences are
TTAGGG TTTGGG
TTAGGC TAAGGG
are the regions on polytene chromosomes where DNA
unfolds into open loops for intense transcription.
Chromosomal rings chromosomal puffs
chiasmata chromonemata
Petite mutants in yeast were first discovered by
T. H. Morgan B. Ephrussi
Mendel Johansen
Hybrid dysgenesis is observed in mating type of
drosophila.
P Male x M Female M Male x P Female
P Male x P Female M Male x M Female
is a Y linked disease.
Hemophilia Colorblindness
Hypertrichosis Night blindness
In Human being type of sex determination system is
present.
ZZ ZW Haplo diploid
XX XC XX XY
Diagrammatic or graphical representation of relative distance between
linked genes of a chromosome is called
Linkage map crossing over
Recombination none of these
Page 1 of 2
Answer the following. 07
What is B chromosome?
What are telomeres?
What is karyotoyping?
What is Q banding?
What are plasmids?
What is C Value paradox?
What are transposons?
SECTION II
Attempt any four.
Q.2 Describe mechanism of transposition different types of transposable
elements.
14
Q.3 Describe maternal inheritance with suitable example. 14
Q.4 Explain in-situ hybridization and add a note on its applications. 14
Q.5 Answer any two of the following. 14
Describe structure of polytene chromosome.
Explain P elements in drosophila.
Describe structure of typical X Y chromosome.
Q.6 Answer any two of the following. 14
Explain G banding of chromosomes.
What are multigene families?
Describe organization of eukaryotic chromosome.