Master of Science I (Genetics) Examination: Oct Nov 2016
Semester I (New CBCS)
SLR No. Day
Date Time Subject Name Paper No. Seat No.
SLR SQ-
438
Wednesday
16/11/2016
10.30 AM
to
01.00 PM
Concepts of Genetics
C
HCT-1.1
es Instructions: Question 1is compulsory.
From Section II attempt any four.
All question carry equal marks.
Figures to right indicate full marks.
Draw neat and labeled diagrams.
Total Marks: 70
Section- I
Q.1 Rewrite the following sentences by using correct alternative. 07
When the chaiamata occur at two points in the same chromosome, the
phenomenon is known as
Double crossing over Single crossing over
Multiple crossing over Point crossing over
The genes which always occupy on same Loci of homologous chromosome are
called as
Characters Alleles
Dominant Recessive
An ichthyosis hystrix gravis hypertrichosis is directly transmitted from father to
son because
It is located on X chromosome It is holandric genes
It is located on homologous part It is located on autosomes
UV effect can be reversed by exposing the cells to visible light is known as
Mutation Removal
Photo reactivation Addition
Crossing over is advantageous because it bring about
Variation Linkage
In breeding Stability
In spermatogenesis cells division takes place by
Reduction division Mitosis
Educational division Meiosis
The name for a chromosome map unit is
Centimorgan centistern
Millimendel Decibarr
Answer the following terms: 07
Holandric genes
Multiple alleles
Synaptonemal complex
Linkage
Mutagene
Test cross
Polyplody
Section-II
(Answer Any Four)
Q.2 Explain Mendle's law of independent assortment with suitable examples and add a
note on phenomenon of dominance.
14
Q.3 Explain Photo reactivation and Excision repair. 14
Q.4 Explain X-Linked inheritance in Human. 14
Q.5 Answer any TWO of the following: 14
Explain sex influenced gene with an example.
Describe life cycle of S. cerevisiae.
Give difference between on mitosis and meiosis.
Q.6 Answer any TWO of the following: 14
Add a note on multiple allele in ABO blood group.
Write a note ionizing and non-ionizing radiation as mutagens.
Explain gene entrance and expressivity