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61. The closest wild relative of cultivated rice is
a) Zizania aquatica
b) Oryza sativa
c) Oryza nivara
d) Zizania palustris
62. A generation which has both male and female flowers is usually referred to as
a) Dioecious
b) Andromonoecious
c) Gynodioecious
d) Monoecious
63. The terminal cluster of spikelets in wheat is referred to as
a) Inflorescence
b) Panicle
c) Spike
d) Silk
64. The general change of chromosome is referred to as
a) Translocation
b) Inversion
c) Deletion
d) Duplication
65. Allopatric species is
a) Has overlapping geographical areas
b) Has different ecological niche
c) Species occurring in isolation
d) A piece of chromosome
66. Duplication is a condition where two non-homologous chromosomes are
a) Present
b) Absent
c) Reversed
d) Repeated
67. On long arm of chromosome 1, a gene controlling eye color in Drosophila is located 3.0 cM and 6.7 cM from centromere. What is the map distance?
a) 3.0
b) 6.7
c) 9.7
d) 3.7
68. No. of linkage groups in tomato is
a) 10
b) 12
c) 24
d) 21
69. Maximum variability can be manifested in
a) F₂ generation
b) F₁ generation
c) Backcross
d) Embryo
70. Which of the following enzymes is responsible for joining broken ends of DNA segments, shall be
a) Topoisomerases
b) Ligase
c) DNA Pol I
d) DNA Pol III
71. Enzymes involved in DNA synthesis shall be
a) Topoisomerase, DNA Pol I, Ligase
b) Ligase, DNA Pol I, Primase
c) SP DNA Pol, Primase, Ligase
d) Primase, Ligase, DNA Pol III
72. A synthetic variety is developed by linking in crosses between
a) Self-pollinated lines not tested for GCA
b) Inbred lines not tested for GCA
c) Hybrid for combining ability
d) Hybrid plants
73. A synthetic variety is developed by
a) Recombination
b) Hybridization
c) Cloning
d) Polyploidy
74. The mechanism that promotes 100 per cent self-pollination
a) Monoecious
b) Cleistogamy
c) Male sterility
d) Heterogamy
75. Maximum variability can be manifested in
a) F₁
b) F₂
c) Embryo
d) Zygote
76. DNA sequence with RNA sequence
a) BLAST
b) DNA sequence with DNA sequence
c) RNA sequence with amino acid sequence
d) None
77. Two essential features for chromosome
a) Telomere & Centromere
b) Telomere & Satellite
c) Centromere & Chromomere
d) None
78. Color blindness in humans is caused by recessive gene located on
a) Y chromosome
b) X and Y chromosome
c) Autosomes
d) X-chromosome
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