B.Sc-B.Sc Zoology 2nd Sem ZY - 102 : Genetics and Parasitology(University of Pune, Pune-2013)

                                            F.Y. B.Sc.

                                                 ZOOLOGY (Theory)

SEAT No. :

[Total No. of Pages : 3

ZY - 102 : Genetics and Parasitology

(2008 Pattern) (Paper - II)

Time : 3 Hours]                                                                                           [Max. Marks : 80

Instructions to candidates :

Draw Neat labeled diagrams wherever necessary. Figures to the right indicate full marks.

SECTION - I

(Genetics)

Q1) Define/Explain the following (any ten) :                                                        [10]

Factor.

Dominance.

Epistasis.

Multiple genes. Eugenics.

Colour blindness. Test cross.

Lethal genes.

Holandric genes. RNA.

Genetics.

Recombinant DNA.

Q2) Write short notes (any three) :                                                                           [15]

Erythroblastosis foetalis.

Kappa particles in Paramoecium. Turner’s syndrome. Alkaptonuria.

Gene Therapy.

P.T.O.

a) Explain with suitable example the gene interaction in the 15 : 1 ratio.

b) Describe the method of sex determination in honeybees.

c) In Corn Plants a dominant allele ‘I’ inhibits the Kernel colour making the

corn Kernel white. Gene ‘i’ is recessive and permits colour when homozygous. At a different locus, the dominant gene ‘P’ causes purple Kernel colour, while homozygous recessive genotype ‘PP’causes Kernels red. If the plants heterozygous at both the loci are crossed, what will be

the phenotypic ratio of F1 generation? Comment on the phenotypic ratio

of this cross.

OR

Q3) Describe the morphology and ultrastructure of chromosome and add a note

on its chemical composition.                                                                           [15]

SECTION - II(Parasitology)

Q4) Define/Explain the following (any ten) :                                                        [10]

Medical protozoology.

Mutualism.

Host-specificity.

Accidental parasite. Inflammation. Amoebiasis.

Toxoplasmosis. Trophozoite.

Hermaphroditism.

Permanent parasite. Prophylaxis.

Sanguivorous.

Q5) Write short notes on (any three) :                                                                    [15]

Pathogenicity of Pediculus humanus.

Commensalism

Treatment and control of Sarcoptes scabei. Control measures of Ascaris lumbricoides. Symptoms of malaria.

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