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
Correct Answer: translocation
- 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
Correct Answer: DNA duplication
- 3. How many chromosomes are there in the budding yeast (S. cerevisiae)?
Options- A. 16
- B. 17
- C. 18
- D. 20 Discuss
Correct Answer: 16
- 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
Correct Answer: a physical map
- 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
Correct Answer: duplication in region of chromosome
- 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
Correct Answer: idiogram
- 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
Correct Answer: criss-cross inheritance
- 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
Correct Answer: Hypertranscription of male X chromosome
- 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
Correct Answer: translocation heterozygote
- 10. Raphanobrassica is a classical example of
Options- A. aneuploidy
- B. nullisomy
- C. allopolyploidy
- D. None of the above Discuss
Correct Answer: allopolyploidy
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