M.Sc. (Genetics) (Semester II) (CBCS) Examination, 2017
REGULATION OF GENE EXPRESSION AND DEVELOPMENTAL GENETICS
Day Date: Wednesday,19-04-2017 Marks: 70
Time: 10.30 AM to 1.00 PM
N.B. Section-I is compulsory.
From Section-II attempt any four.
All questions carry equal marks.
Figures to right indicate full marks.
Draw neat and labeled diagrams.
SECTION I
Q.1 Rewrite the following sentences by using correct
alternatives:
07
The site on DNA where a repressor binds called an
Lariate Activator Promoter Operator
Lac z gene encodes the enzyme
α galactosidase β galactosidase
protease α lipase
In embryonic development the process of formation of
blastocoel remarked by stage
blastula gastrula tetrad morula
In plants one of male gamete fuse with the egg or oosphere
To form diplod zygote this is called
progamy syngamy acrogamy siphonogamy
In Drosophila expressed in seven distinct bands
along the anterior-posterior axis, in effect divide embryo
into 15 segments.
gap genes pair rule genes
p53 genes Toll genes
The promoter of araBAD operon from E.coli is activated in
the presence of
insulin triose DNA arabinose
In RNA splicing introns are removed and
exons remain exons are also removed
gene amplifies gene cloning takes place
Page 1 of 2
SLR- RK 481
Answer the following terms. 07
Blastulation
Sipohnogamy
RNA editing
Diffentiation
Fertilization
Root apical meristem
Regulatory proteins
SECTION II
Attempt any four:
Q.2 Explain organization and regulation of lac operon. 14
Q.3 Explain embryo sac formation and double fertilization in plants. 14
Q.4 Explain ABC model of flower patterning in Arabidopsis. 14
Q.5 Answer any two of the following: 14
Explain concept of Vulva formation in C.elegans.
Explain heat shock gene expression
Discuss galactose utilization in yeast.
Q.6 Answer any two of the following: 14
Explain double fertilization in plants.
Mechanism of lens induction in vertebrates
Describe process of gastrulation in chick