1. One Horse Power (HP) is expressed in terms of watt which is:
- (1) 720
- (2) 786
- (3) 746
- (4) None of these
2. Number of segments present in insect head is:
- (1) Two
- (2) Four
- (3) Six
- (4) Seven
3. Deficiency symptom of sulphur first appears on:
- (1) Younger leaves
- (2) Older leaves
- (3) Middle leaves
- (4) None of these
4. Protein content in lentil is:
- (1) 18%
- (2) 25%
- (3) 16%
- (4) 20%
5. Demonstration showing how to do things is called:
- (1) Method demonstration
- (2) Result demonstration
- (3) Training
- (4) Frontline demonstration
6. Dithane M-45 is a:
- (1) Bactericide
- (2) Insecticide
- (3) Fungicide
- (4) Nematicide
7. Jarnunapari is a breed of:
- (1) Cow
- (2) Goat
- (3) Buffalo
- (4) None of the above
8. Select the correct formula of urea:
- (1) \( H_2NCO_2NH_2 \)
- (2) \( HNCONH \)
- (3) \( H_2NCONH_2 \)
- (4) \( H_4NCONH_4 \)
9. The measure of central tendency is:
- (1) Median
- (2) Mode
- (3) Mean
- (4) All of the above
10. On which of the following plant Gregor Mendel performed his classical experiment?
- (1) Gram
- (2) Maize
- (3) Pea
- (4) Rice
11. One of the principal possible orientations of a ring of four chromosomes at metaphase-I of translocation heterozygotes producing viable gametes:
- (1) Alternate orientation
- (2) Adjacent-I orientation
- (3) Adjacent-II orientation
- (4) Non-orientation of the centromeres of two chromosomes in alternate positions in the ring
12. The oxidation of one molecule of NADH in mitochondria results in the formation of:
- (1) Two molecules of ATP
- (2) Five molecules of ATP
- (3) Three molecules of ATP
- (4) One molecule of ATP
13. In RAPD, the primer consists of:
- (1) Ten nucleotides
- (2) Six nucleotides
- (3) Twenty-two nucleotides
- (4) Single nucleotide
14. The Dolly sheep was cloned at:
- (1) University of California
- (2) Roslin Institute, Scotland
- (3) Indian Agricultural Research Institute
- (4) Cambridge University
15. Golden rice is rich in:
- (1) Beta Carotene
- (2) Vitamin C
- (3) Protein
- (4) Antioxidant
16. If 'q' is the selected number of individuals and 'n' is the total number of individuals in a population, the ratio \( q/n \) offers the estimate of:
- (1) Selection differential
- (2) Selection response
- (3) Selection intensity
- (4) Selection pressure
17. Significant deviation of regression coefficient 'b' from unity in Vr-Wr graph, indicates:
- (1) Presence of epistasis
- (2) Absence of epistasis
- (3) Presence of G x E interaction
- (4) Presence of dominance
18. In Line x Tester analysis, tester should have:
- (1) Narrow genetic base
- (2) Broad genetic base
- (3) No maternal effect
- (4) Low heritability
19. Six parameter model of generations mean analysis is employed when:
- (1) Epistasis is present
- (2) Epistasis is absent
- (3) Dominance is present
- (4) Dominance is absent
20. Heritability of a character within a pure line is:
- (1) Zero
- (2) 100%
- (3) 75%
- (4) 50%
21. The probability that two genes at any locus in an individual are identical by descent refers to:
- (1) Selection coefficient
- (2) Inbreeding coefficient
- (3) Regression coefficient
- (4) Correlation coefficient
22. Half-sibs individuals are related by commonness of:
- (1) One parent
- (2) Two parents
- (3) Three parents
- (4) Four parents
23. Sears (1956) firstly transferred a segment of a chromosome with rust resistance gene through radiation-induced translocation in wheat from:
- (1) Aegilops umbellulata
- (2) Aegilops speltoides
- (3) Agropyron intermedium
- (4) Aegilops bicornis
24. The term addition decay was coined by:
- (1) Riley and Kimber
- (2) E.R. Sears
- (3) Untau et al
- (4) Driscoll
25. Who demonstrated that genes are located in the chromosomes?
- (1) Morgan
- (2) Meselson and Stahl
- (3) Chargaff
- (4) Franklin
26. Who had conducted the X-ray diffraction studies leading to the discovery of the structure of DNA?
- (1) McClintock
- (2) R. Franklin
- (3) Meselson and Stahl
- (4) Chargaff
27. Which of the following is not true of DNA?
- (1) A pairs with T and G pairs with C
- (2) Nitrogen bases are 0.34 nm apart on a DNA strand
- (3) The double helix is 2.0 nm wide
- (4) The double helix is 3.4 nm wide
28. For correcting defects in a popular variety, the most commonly used breeding method is:
- (1) Bulk method
- (2) Pedigree method
- (3) Backcross method
- (4) Pure line method
29. Highest expression of heterosis is observed in:
- (1) Single cross hybrid
- (2) Double cross hybrid
- (3) Open pollinated variety
- (4) Composite
30. Commercial hybrid rice seed production in India is mostly done through:
- (1) One line system
- (2) Two line system
- (3) Three line system
- (4) None of these
31. Hardy-Weinberg Law is applicable for maintenance of genetic purity in:
- (1) Inbreds
- (2) Composites
- (3) Hybrids
- (4) Pure lines
32. Sporophytic self-incompatibility is found in:
- (1) Wheat
- (2) Mustard
- (3) Pea
- (4) Sunflower
33. Under PPVFR Act 2001, farmers may sell their produce as:
- (1) Certified Seed
- (2) Breeder Seed
- (3) Unbranded Seed
- (4) Nucleus Seed
34. The technique used to reduce the period of breeding generations is:
- (1) Single seed descent
- (2) Double haploid
- (3) Transgressive Breeding
- (4) Test Cross
35. Distant hybridization may be done through:
- (1) Ovule culture
- (2) Embryo rescue
- (3) Anther culture
- (4) Pollen culture
36. Transgressive segregants are the outcome of:
- (1) Segregation & recombination
- (2) Heterosis
- (3) Mutation
- (4) Pleiotropy
37. A particular allele can have different effects if it was inherited from a male rather than a female. This phenomenon is known as:
- (1) Extranuclear inheritance
- (2) Genome imprinting
- (3) Sex-linkage
- (4) Prader-Willi syndrome
38. Double trisomics is denoted as:
- (1) 2n+1
- (2) 2n+1+1
- (3) 2n+2
- (4) 2n-1-1
39. Both chloroplasts and mitochondria:
- (1) are found within the nucleus
- (2) have linear DNA
- (3) carry extranuclear genes
- (4) display a Mendelian pattern of inheritance
40. Which of the following is not needed for DNA replication?
- (1) Ribosomes
- (2) DNA
- (3) Nucleotides
- (4) Enzymes
Short Answer Questions (Attempt any five):
1. Alfred Hershey and Martha Chase gave additional evidence that DNA is the genetic material. With the help of a suitable diagram, describe the experiment conducted by them to demonstrate that DNA is the genetic material.
2. Write about Sanger and Coulson (di-deoxy) technique of DNA sequencing.
3. Enlist the assumptions of diallel analysis and briefly describe the graphical analysis.
4. Briefly describe the constraints and opportunities of wide crosses in crop improvement.
5. Enlist the methods for identification of chromosomes involved in translocation heterozygotes and describe one of them in detail.
6. Briefly describe the genetic basis of heterosis along with objections and explanations.
7. Discuss Transgenic Genetic Male sterility, its mechanisms, and uses.
8. Describe the mechanism for regulation of lactose operon in *Escherichia coli*. Discuss the inducible and repressible system operating in it.
9. Differentiate between macro-mutations & micro-mutations. Describe the mutation breeding for crop improvement.
10. What is marker-assisted selection? Describe QTL Mapping.
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