Download SGBAU BSc 2019 Summer 4th Sem Zoology Advanced Genetics n Animal Ecology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 4th Sem Zoology Advanced Genetics n Animal Ecology Previous Question Paper

Time
AW-l72l)
B.Sc. (Part?ll) Semester?IV Examination
48 : ZOOLOGY
(Advanced Genetics and Animal Ecology)
: Thrcc Hours] [Maximum Marks : 80
Note :? (1) ALL questions are compulsory.
l.
YBC
(A)
(B)
(C)
(2) Qucslion No. I carries 8 marks and remaining six questions carry 12 marks each.
('3) Illustrate your answers with suitable diagrams wherever necessary.
Fill in the blanks :
(i) Law of Independent assortment was explained by
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(ii) 'l?risomy of chromosome 18 results into _ ____ smdromc.
(iii) The animals. which cannot regulate their body temperature are !7*_ 7 7 animals.
(iv) Thc Energy pyramid is always r? $ ?
Choose correct altcrnativcs from the following : 2
(V') 111: altemative forms of genes are called as _ ____ -_,
(av) alleles (b) phenol) pc
(c) genotype (d) gamete
(Vi) Thc genes of di?brcm traits located on di?'ercm loci on the same chromosome are
called _ w __ genes.
(3) allclcs (h) linked
(c) pleiomorphic (d) mutated
(vii) Amniocentesis and CVS is a __A_ ._ process,
(a) Invasive (b) Non-lnvasivc
(c) Confined ('d') None of the above
(viii?)D0rmancy in animals during summer season is called ,,____
(a) Hibernation (b) Acstivation
(c) Diapaiwe (d) None of those
Answer in one sentence : 4
(ix) Dcline lethal gcncs.
(x) What are gynandromorphs '.?
(xi) What is consanguinous marriage '?
(xii) Whai is trophic levels '?
Explain the following : 12
(a) Complcmcnlaw factor
(b) Law of Segregation
(c) Lclhal factors.
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'v)
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(d) Monohybrid cross
(e) Inhibitory factors
(0 Law 01' Independent assn'tmcnl.
l)cscribn- the followmg :
(g) Darlington?s theory of crosang nwr
(h) Incomplete linkage
(i) Mutiplc alleles
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(j) Erythroblastosis foclulis
(k) Sigri?cancc of linkage
(l) Single and double cumin; wvcr.
Describe the genie balancc theory of sex dctcnninution.
OR
Describe daemOphilia and its mhcritancc
Describe lhe birth control mnhnds in male and female.
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Describe Ihc identical and l?ralcrnaJ twins and their signi?cance.
Explain the following :
(m) Commensalism
(n) Phototropism
(0) lntraspcci?c aswciutims?
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(p) Photokincsis
(q) Poikilothcrms
(r) Parasitism.
Describe the following :
(s) Ecological niche
(t) Pyramid of Biomass
(u) Fond chains.
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(v) Lolic ecosystem
(w) Strati?cation of Marine com} item
( x) l?cotypcs.
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