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Animal Biotechnology Chromosomes problems


  • 1. Exchange of segments between non homologous chromosomes is best known as

  • Options
  • A. translation
  • B. translocation
  • C. recombination
  • D. crossing over
  • Discuss
  • 2. In an organism, the chromosome number is maintained constant because of

  • Options
  • A. independent assortment
  • B. crossing over
  • C. DNA duplication
  • D. synapsis
  • Discuss
  • 3. How many chromosomes are there in the budding yeast (S. cerevisiae)?

  • Options
  • A. 16
  • B. 17
  • C. 18
  • D. 20
  • Discuss
  • 4. A map of chromosomes that utilizes cloned and sequenced DNA fragments rather than genetic markers is known as

  • Options
  • A. a physical map
  • B. a genetic map
  • C. a cloning map
  • D. none of these
  • Discuss
  • 5. Hairy wing character of Drosophila is due to

  • Options
  • A. duplication in region of chromosome
  • B. deletion in region of chromosome
  • C. due to presence of additional X-chromosome
  • D. due to a point mutation
  • Discuss
  • 6. A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as

  • Options
  • A. zymogram
  • B. chromogram
  • C. idiogram
  • D. karyogram
  • Discuss
  • 7. Transmission of a gene from male parent to female child to male grand child is known as

  • Options
  • A. holandric inheritance
  • B. quantitative inheritance
  • C. criss-cross inheritance
  • D. maternal inheritance
  • Discuss
  • 8. How does dosage compensation in Drosophila occur?

  • Options
  • A. Hypertranscription of male X chromosome
  • B. Hypotranscription of female X chromosome
  • C. X inactivation in females
  • D. Chimerism
  • Discuss
  • 9. A cross shaped (+) or a ring involving four chromosomes may be formed during metaphase I in case of

  • Options
  • A. translocation heterozygote
  • B. deficiency
  • C. haploid organism
  • D. duplication
  • Discuss
  • 10. Raphanobrassica is a classical example of

  • Options
  • A. aneuploidy
  • B. nullisomy
  • C. allopolyploidy
  • D. None of the above
  • Discuss

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