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Home Biotechnology Special Proteins and Crop Improvement Comments

  • Question
  • The tumor phenotype, which can be maintained indefinitely in tissue culture, results from the expression of genes on the


  • Options
  • A. T-DNA
  • B. c-DNA
  • C. r-DNA
  • D. m-RNA

  • Correct Answer
  • T-DNA 


  • Special Proteins and Crop Improvement problems


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    • 1. Which of the following has been confirmed on sugarcane genotypes?

    • Options
    • A. Bacilliform virus
    • B. Cytomegalovirus
    • C. Varicella-zoster virus
    • D. Erythrovirus
    • Discuss
    • 2. Meristem culture of banana enables

    • Options
    • A. rapid multiplication
    • B. elimination of bunch top virus disease
    • C. both (a) and (b)
    • D. slow growth
    • Discuss
    • 3. The hybrid embryo can be rescued from damage/collapse by growing it

    • Options
    • A. at low temperature
    • B. at low pH
    • C. at low water activity
    • D. in artificial medium
    • Discuss
    • 4. Which of the following is the class of hybridization?

    • Options
    • A. Intervarietal
    • B. Interspecific
    • C. Intergeneric
    • D. all of these
    • Discuss
    • 5. Which of the following govern sporophytic self-incompatibility in Brassica?

    • Options
    • A. Aegilops
    • B. Triticum
    • C. Both (a) and (b)
    • D. S alleles
    • Discuss
    • 6. MS medium, is found essential for initial morphogenesis of the immature embryos and to enhance callus development, when supplemented with

    • Options
    • A. GA3
    • B. GA3 and coconut milk
    • C. adenine
    • D. adenine and kinetin
    • Discuss
    • 7. Protoplast fusion technique generally involves

    • Options
    • A. isolation only
    • B. isolation and fusion
    • C. isolation, fusion and culturing
    • D. hybridization between two species
    • Discuss
    • 8. Microinjection technique of introducing NA is a

    • Options
    • A. physical method
    • B. biological method
    • C. combination of physical and biological method
    • D. chemical method
    • Discuss
    • 9. Commercial sugarcane is heterozygons with germplasm from

    • Options
    • A. 1-3 Saccharum species
    • B. 3-5 Saccharum species
    • C. 5-7 Saccharum species
    • D. 7-9 Saccharum species
    • Discuss
    • 10. In transgenic plants of Arabidipsis thaliana which of the following gene is transferred for the synthesis of PHB (polyhdroxybutyrate)?

    • Options
    • A. Acetyl Co A reductase
    • B. Polyhydroxybutyrate synthease
    • C. Both (a) and (b)
    • D. Pyrophosphorylase
    • Discuss


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