Bulk breeding method was developed by
A. Nilson Ehle (1908)
B. Allard (1960)
C. Goulden (1939)
D. None of these
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When F1 -plants heterozygous for tallness are salfed, F2 -generation has both tall and dwarf plants? This proves the principle of
A. Dominance
B. Law of segregation
C. Law of independent assortment
D. Blended inheritance
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Match the following columns:
Column I
Column II
a. Bacteriophages
1. Viruses infecting bacteria
b. Capsid
2. Protein coat of viruses
c. Oncogene
3. Causes AIDS
d. Human immuno deficiency
4. When activated cause cancer
A. a-1, b-3, c-4, d-2
B. a-1, b-2, c-4, d-3
C. a-2, b-3, c-4, d-1
D. a-4, b-3, c-2, d-1
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Arize-AZ 8433 DT, a mid-duration rice variety launched by Bayer, offers protection from
A. BLB
B. BPH
C. Both A and B
D. Mite
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Choose the wrong one.
A. Lipid biosynthesis occurs in peroxisome
B. Removal of toxic chemicals is done by SER
C. Lysosome is suicidal bag
D. Protein synthesis takes place by ribosomes
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Systematic hybridization on a scientific basis began with the work
A. Shull-Maize
B. Patel-Cotten
C. Koelreuter-Nicotiana
D. Knight-Fruits
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If a heterozygous Black fur mouse (Bb) mates with a homozygous Brown mouse (bb), what % of their offspring will have Black flour?
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Crossing over between homologous chromosome never exceeds
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Multiple effects of a single gene is known as
A. Pleiotropy
B. Polyploidy
C. Heteroploidy
D. Allopolyploidy
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Autopollyplidy can be found in
A. Sugarcane
B. Cotton
C. Mustard
D. All of the above
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Relative Biological Effictiveness (RBE) usually refers to the damage caused by
A. High temperature
B. Low temperature
C. Radiation
D. Freezing
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Match the following columns:
Column I
Column II
a. Enhancement effect
1. Warburg
b. C3 cycle
2. Hatch and slack
c. C4 cycle
3. Emerson
d. Two step photosynthesis
4. Calvin
A. a-1, b-2, c-3, d-4
B. a-3, b-4, c-2, d-1
C. a-1, b-3, c-2, d-4
D. a-2, b-4, c-1, d-3
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Biological fixation of nitrogen is helped by
A. Zinc
B. Copper
C. Boron
D. Molybdenum
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The process of development of pollen grains in anther of the stamen is
A. Megassporogenesis
B. Spermatogenesis
C. Mcrosporogeneis
D. Fertilization
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The equilibrium in random mating population is disturbed by selection, mutation, inbreeding, migration and genetic drift in which situation the population may regain its original composition
A. Inbreeding and selection
B. Selection
C. Migration
D. Genetic drift
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Father of Hybrid cotton is
A. M. S. Swaminathan
B. C. T. Patel
C. A. Sarkar
D. H. S. Patel
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With reference to domestication of crop plants, consider the following statements
1. Under the domestication, the variability generated by spontaneaus mutation, natural hybridization and polyploidy were selected by wan to suit his needs.
2. The extent of genetic variability substantially increased due to selection.
Which of the statements given above is/are correct?
A. Only 1
B. Only 2
C. 1 and 2
D. None of these
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All of the following is transcribed from DNA except
A. Introns
B. Exons
C. mRNA
D. DNA
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Choose the wrong one about gap junction.
A. Present only in Plant cells
B. Channel like structure connect cytoplasm of side cells
C. Constituted of membrane associated proteins named connexins
D. Only small ions and molecules are allowed to pass from cell to cell
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Multiline varieties are mixture of
A. Groups of plant having different morphological charecter
B. The progenies of different inbred lines
C. Mixture of several similar purelines
D. Mixture of morphologically similar plants having different genotypes
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