1. Which of the following event occur during metaphase of meiosis-I?
A. Chiasma terminalization
B. Arrangement of bivalents at equatorial plate
C. Crossing over
D. Separation of homologous chromosomes
2. Chromosomes are clearly visible at:
A. Metaphase
B. Telophase
C. Anaphase
D. Prophase
3. Crossing over takes place between:
A. Homologous chromosomes
B. Non homologous chromosomes
C. Isochromosomes
D. All of these
4. One cycle of mitosis gives rise to:
A. Two haploid cells
B. Two diploid cells
C. Four haploid cells
D. Four diploid cells
5. Shape of chromosome is determined by the position of
A. Centromere
B. Chromomere
C. Telomere
D. All of these
6. In meiosis, Prophase-I is divided into _____sub-stages?
A. Three
B. Five
C. Six
D. Two
7. Pairing of homologous chromosomes occur during which stage?
A. Leptotene
B. Pachytene
C. Zygotene
D. Diplotene
8. Which of the following does not contain DNA?
A. Golgi body
B. Mitochondria
C. Chloroplasts
D. Nucleus
9. Which of the following is the main function of chloroplasts?
A. Protein synthesis
B. Respiration
C. Photosynthesis
D. Glycolysis
10. Packaging of food material is associated with
A. Chloroplasts
B. Golgi bodies
C. Ribosomes
D. Lysosomes
11. Basic chromosome number is denoted by
A. x
B. n
C. 2n
D. 2n
12. Which of the following can cause pseudo-dominance?
A. Deletion
B. Duplication
C. Translocation
D. Inversion
13. Nulli-somics are represented by which of the following?
A. 2n - 2
B. 2n - 1 - 1
C. 2n - 1 + 1
D. 2n + 2
14. How many somatic chromosomes are present in maize?
A. 10
B. 20
C. 30
D. 40
15. Colchicine is extracted from which of the following?
A. Colchicum autumnale
B. Allium cepa
C. Rosa indica
D. Coleus blumei
16. Tetra-somics are represented by which of the following?
A. 2n + 2
B. 2n - 1 - 1
C. 2n - 1 + 1
D. 2n + 2
17. Inversion leads to change in
A. Gene sequence
B. Gene number
C. Gene composition
D. None of the above
18. The genetic constitution of Brassica nigra is
A. BB
B. AABB
C. AACC
D. CC
19. Which of the following is tetraploid species of Brassica
A. B. campestris
B. B. oleracea
C. B. juncea
D. B. nigra
20. How many somatic chromosomes are present in Pearlmillet?
A. 10
B. 14
C. 20
D. 24
21. Two ends of chromosomes are known as
A. Telomere
B. Holomere
C. Chromomere
D. Centromere
22. Normally crossing over promotes
A. Recombination
B. Parental types
C. Linkage
D. All of these
23. Frequency of crossing over never exceeds from
A. 5
B. 50
C. 25
D. 35
24. Linkage can be determined by
A. Test cross method
B. Repeated inter mating
C. Top cross method
D. Back cross method
25. Mendel discovered laws of inheritance working with
A. Drosophila
B. Garden pea
C. Barley
D. Maize
26. How many characters did Mendel study in garden pea?
A. 7
B. 10
C. 12
D. 14
27. When centromere is involved in the inversion, it is known as_____ inversion
A. Metacentric
B. Pericentric
C. Peracentric
D. Telocentric
28. The change in chromosome number which involve entire set is called
A. Anueploidy
B. Polyploidy
C. Euploidy
D. None of the above
29. In 1905, coupling and repulsion phase of linkage were given by
A. Morgan
B. Bateson and Punnet
C. Muller
D. Bridges
30. A cross in which the order of male and female parents is reversed is called
A. Back cross
B. Test cross
C. Reciprocal cross
D. Direct cross
31. Trihybrid ratio is
A. 27:9:3:9:3:9:3:1
B. 27:9:9:9:3:3:3:1
C. 9:3:3:1
D. 3:1
32. The gene whose effect is masked is called
A. Hypostatic gene
B. Pleiotropic gene
C. Modifier gene
D. None of these
33. Ratio of Duplicate dominant gene interaction is
A. 9:3:4
B. 15:1
C. 12:3:1
D. 9:3:3:1
34. Ratio of Inhibitory epistasis is
A. 13:3
B. 15:1
C. 12:3:1
D. 9:7
35.……… hydrogen bonds join adenine and thymine in a DNA molecule
A. Single
B. Double
C. Triple
D. All of these
36. DNA is a polymer of
A. Amino acids
B. Nucleotides
C. Proteins
D. All of these
37. How many codons are there in a genetic code?
A. 64
B. 4
C. 16
D. 32
38. Who won Nobel prize for operon hypothesis
A. Jacob and Monod
B. Temin
C. Baltimore
D. Britten
39. Mendel’ paper was published in
A. Brunn society of plant hybridization
B. Brunn society of plant history
C. Natural history society of plant evolution
D. Natural history society of Brunn
40. In a DNA molecule, replacement of pyrimidine by pyrimidine is called
A. Transfection
B. Transversion
C. Reversion
D. Transition
41. ‘P’ site, ‘A’ site and ‘E’ site are associated with
A. Protein synthesis
B. t-RNA synthesis
C. m-RNA synthesis
D. DNA synthesis
42. Who induced artificial mutation in plant by X-rays?
A. Muller
B. Stadler
C. Seth Wright
D. Mendel
43. The mutation that show more than 50% mortality in the individuals that carry it:
A. Lethal
B. Sub-lethal
C. Sub-Vital
D. Sub-vital
44. EMS stands for
A. Ethylmethane sulphonate
B. Ethylmethyl sulphonate
C. Ethylmethane sulpher
D. Ethyl Mustard sulphonate
45. Quantitative character is also called
A. Minor gene character
B. Polygenic character
C. Variable character
D. All of these
46. Kernel colour in wheat is a quantitative character and was studied by
A. Nilsson-Ehle
B. Mendel
C. Morgan
D. Muller
47. ABO blood group in human is the example of which of the following?
A. Complete dominance
B. Incomplete dominance
C. Co-dominance
D. Both b) and c)
48. Within a gene, a unit of mutation is called
A. Hot spot
B. Cistron
C. Muton
D. Recon
49. The sections of DNA (or RNA) that code for proteins are called
A. Introns
B. Exons
C. Sensor sequence
D. None of the above
50. Non-coding section of the RNA transcript is
A. Introns
B. Exons
C. Sensor sequence
D. None of the above
51. Tendency of two or more genes to stay together during inheritance is known as
A. Crossing over
B. Interference
C. Recombination
D. Linkage
52. The characters for which genes are present in Y chromosome are known as
A. Sex linked character
B. Sex influenced character
C. Female character
D. Holandric character
53. Linkage between dominant or recessive alleles of two or more genes is known as
A. Coupling phase
B. Repulsion phase
C. Repulsive phase
D. Compulsive phase
54. Tendency of one crossing over to reduce the chance of another crossing over in the adjacent
region is known as
A. Coincidence
B. Interference
C. Dosage compensation
D. None of the above
55. Mutual exchange of chromosomal segments between non homologous chromosomes is
known as
A. Translocation
B. Crossing over
C. Shift
D. Reciprocal translocation
56. Expression of recessive allele in the absence of its dominant allele is known as
A. Incomplete dominance
B. Pseudo dominance
C. Co dominance
D. Complete dominance
57. Largest unit of a gene
A. Cistron
B. Recon
C. Muton
D. Both A) and C)
58. Most abundant type of RNA is
A. rRNA
B. tRNA
C. mRNA
D. None of the above
59. Lack of chlorophyll in green plant and of melanin from skin is known as
A. Albinism
B. Discoloration
C. Chlorosis
D. All of the above
60. One gene one enzyme hypothesis was proposed by
A. Beadle and Tatum
B. Watson and Crick
C. Jacob and Monod
D. None of the above
61. Production of complementary DNA copy from mRNA is termed as
A. Transcription
B. Translation
C. Tenalism
D. None of the above
62. Negative interference has been observed in
A. Blue green Algae
B. Grasshopper
C. Bacteriophages
D. None of the above
63. Which of the following is not a part of nucleosome core
A. H2a
B. H2b
C. H1
D. H3
64. Loop of lampbrush chromosome are the sites of
A. RNA synthesis
B. DNA synthesis
C. Ribosome synthesis
D. DNA replication
65. First AICRP started in the year, 1957 with the collaboration of
A. ICRISAT
B. Bill and Melinda gates foundation
C. Both A) and B)
D. Rockefellar and Ford foundation
66. Pulses are deficient in
A. Tryptophan
B. Methionine
C. Both A) and B)
D. None of the above
67. The plasmid that carry genes for resistance to antibiotics
A. R plasmid
B. Col plasmid
C. F plasmid
D. All of the above
68. A map unit or centimorgan is that distance, which allows
A. 10% recombination
B. 1% recombination
C. 20% recombination
D. 100% recombination
69. The human Genome Project was officially began on
A. October 1, 1990
B. October 1, 1991
C. September 1, 1990
D. September 1, 1991
70. Which of the following is a hybrid marker
A. RFLP
B. RAPD
C. AFLP
D. Both A) and C
71. Minisatellite DNAs are usually
A. 200-2000bp
B. 0.2-2bp
C. 20-200bp
D. None of the above
72. In southern hybridization……….is separated by gel electrophoresis
A. DNA
B. RNA
C. Protein
D. Both A) and C)
73. Library of expressed genes is
A. Universal library
B. Library of California University
C. cDNA library
D. Genomic Library
74. Pollymerase Chain Reaction was developed by
A. Kary Mullis
B. W. Arber
C. Smith
D. Both A) and C)
75. What is not right about to central dogma
A. Genetic information transferred from nucleic acid to nucleic acid
B. Genetic information transferred from RNA to Protein
C. Both A) and B)
D. Genetic information transferred from Protein to nucleic acid
76. The -10 sequence of transcription unit is also known as
A. TATA box
B. Pribnow box
C. Both A) and B)
D. None of the above
77. RNA polymerase I is occurs in
A. Ribosome
B. Nucleoplasm
C. Nucleolus
D. Both A) and C)
78. Target genes for RNA polymerase II are
A. rRNA genes
B. mRNA genes
C. Both A) and B)
D. tRNA genes
79. Puff are found in
A. Lampbrush chromosome
B. Polytene chromosome
C. Isochromosome
D. B chromosome
80. Loop are found in
A. Lampbrush chromosome
B. Polytene chromosome
C. Isochromosome
D. B chromosome
81. In prokaryotes mostly
A. Negative mechanism of gene regulation is found
B. Positive mechanism of gene regulation is found
C. Both A) and B)
D. None of the above
82. The first transgenic plant against virus disease is produced in
A. Tomato
B. Soybean
C. Brinjal
D. Tobacco
83. Dimethyl Sulphoxide (DMSO) is a
A. Anti-transpirant
B. Cryoprotactant
C. Fusogen
D. All of the above
84. Gene for gene concept was given by
A. Flor
B. K.C. Mehta
C. Vanderplank
D. None of the above
85. Tift 23A and Tift 23D2A are male sterile lines of
A. Sorghum
B. Pearlmillet
C. Maize
D. Cotton
86. Oligogenic resistance is synonymous to
A. Horizontal resistance
B. Vertical resistance
C. Both A) and B)
D. None of the above
87. Monogenic resistance is………durable than polygenic resistance
A. More
B. Less
C. Highly
D. All of the above
88. Frame shift mutation produced due to
A. Base substitution
B. Base addition
C. Base deletion
D. Both B) and C)
89. Which of the following is a start codon?
A. UAA
B. UAG
C. AUG
D. UGA
90. Prabhavati is a mutant variety of
A. Wheat
B. Rice
C. Maize
D. Sorghum
91. H4 first cotton hybrid is a
A. Inter varietal hybrid
B. Inter specific hybrid
C. Intergeneric hybrid
D. None of the above
92. DSH-129 is a hybrid variety of
A. Sunflower
B. Safflower
C. Sorghum
D. Sugarcane
93. Dominance hypothesis of heterosis was proposed by
A. Davenport
B. Bruce, Keeble and Pellew
C. Shull
D. All of the above
94. RNA as the genetic material was first reported by
A. Griffing
B. Avery Macleod and McCarty
C. Frankel Conrat and Singer
D. None of the above
95. Which form of DNA is common in vivo?
A. A-DNA
B. B-DNA
C. C-DNA
D. Z-DNA
96. Dehydrated DNA occurs in the
A. A form
B. B form
C. Z form
D. None of the above
97. The size of pBR 322 is
A. 4363bp
B. 5000bp
C. 3580bp
D. 2700bp
98. DNA replication always proceeds in
A. 5’-3’ direction
B. 3’-5’ direction
C. Both A) and B)
D. None of the above
99. DNA replication is always
A. Unidirectional
B. Bidirectional
C. Both A) and B)
D. None of the above
100. Rolling circle model of DNA replication occurs in
A. Phi-phage174
B. Mammals
C. Adenovirus
D. All of the above
