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Plant Genetics problems

  • 1. What is the approximate size (in kb) of the melon mitochondrial genome?

  • Options
  • A. 600 kilobase
  • B. 1200 kilobase
  • C. 2400 kilobase
  • D. 3000 kilobase
    • Discuss
  • 2. During meiosis crossing over takes place at

  • Options
  • A. zygotene stage
  • B. diplotene stage
  • C. diakinesis stage
  • D. pachytene stage
    • Discuss
  • 3. Which of the following transposable elements are not found in plants?

  • Options
  • A. Ac
  • B. Tam3
  • C. L1
  • D. All are found
    • Discuss
  • 4. When do kinetochore microtubules pull chromosomes towards opposite spindle poles?

  • Options
  • A. In anaphase A
  • B. In anaphase B
  • C. In metaphase
  • D. In telophase
    • Discuss
  • 5. In the meiotic cell divison in daughter cells are produced by two successive division in which

  • Options
  • A. first division is equational, second is reductional
  • B. first division is reductional and second is equational
  • C. both divisions are reductional
  • D. both divisions are equational
    • Discuss
  • 6. The homologous chromosomes follow the process of synopsis in the

  • Options
  • A. leptotene
  • B. zygotene
  • C. pachytene
  • D. diplotene
    • Discuss
  • 7. In case of incomplete dominance, the phenotypic ratio of a monohybrid cross will be

  • Options
  • A. 1:2:1
  • B. 3:1:1
  • C. 1:3:1
  • D. 1:1:2
    • Discuss
  • 8. When F1 plants are crossed with homozygous recessive plants, it is known as

  • Options
  • A. test cross
  • B. recessive cross
  • C. criss-cross
  • D. para-cross
    • Discuss
  • 9. The shortest of mitotic phases is the

  • Options
  • A. telophase
  • B. interphase
  • C. metaphase
  • D. anaphase
    • Discuss
  • 10. A plasmid used to introduce BT toxin into a plant cell

  • Options
  • A. carries an antibiotic resistance gene that makes the plant resistant to antibiotics
  • B. causes the plant to produce opines
  • C. is toxic for the plant cell
  • D. carries a bacterial gene with a plant promoter
    • Discuss

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