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MCQs

Total Questions : 238 | Page 3 of 24 pages
Question 21. Hairy wing character of Drosophila is due to
  1.    duplication in region of chromosome
  2.    deletion in region of chromosome
  3.    due to presence of additional X-chromosome
  4.    due to a point mutation
 Discuss Question
Answer: Option A. -> duplication in region of chromosome
Answer: (a).duplication in region of chromosome
Question 22. A cross shaped (+) or a ring involving four chromosomes may be formed during metaphase I in case of
  1.    translocation heterozygote
  2.    deficiency
  3.    haploid organism
  4.    duplication
 Discuss Question
Answer: Option A. -> translocation heterozygote
Answer: (a).translocation heterozygote
Question 23. A diagram depicting chromosomes of haploid set of an organism ordered in a series of decreasing size is known as
  1.    zymogram
  2.    chromogram
  3.    idiogram
  4.    karyogram
 Discuss Question
Answer: Option C. -> idiogram
Answer: (c).idiogram
Question 24. How does dosage compensation in Drosophila occur?
  1.    Hypertranscription of male X chromosome
  2.    Hypotranscription of female X chromosome
  3.    X inactivation in females
  4.    Chimerism
 Discuss Question
Answer: Option A. -> Hypertranscription of male X chromosome
Answer: (a).Hypertranscription of male X chromosome
Question 25. Incase of inversion when the inverted segment of chromosome includes centromere, it is known as
  1.    paracentric inversion
  2.    double inversion
  3.    inverted inversion
  4.    pericentric inversion
 Discuss Question
Answer: Option D. -> pericentric inversion
Answer: (d).pericentric inversion
Question 26. The nucleous of mature unfertilized ovum may be removed by
  1.    irradiation
  2.    surgery
  3.    both (a) and (b)
  4.    neutralization and homogenization
 Discuss Question
Answer: Option C. -> both (a) and (b)
Answer: (c).both (a) and (b)
Question 27. The success of embryo transplantation depends upon the ability to obtain an increased number of embryos from animals of superior genetic merit, which can be achieved by the use of
  1.    exogenous gonadatrophic hormones
  2.    endogenous gonadatrophic hormones
  3.    both (a) and (b)
  4.    FSH (Follicle Stimulating Hormone)
 Discuss Question
Answer: Option A. -> exogenous gonadatrophic hormones
Answer: (a).exogenous gonadatrophic hormones
Question 28. The technique, mainly used for the diagnosing birth defects in the fetus by means of needle, is called
  1.    amniocentesis
  2.    ectogensis
  3.    transplantation
  4.    all of the above
 Discuss Question
Answer: Option A. -> amniocentesis
Answer: (a).amniocentesis
Question 29. Multiple ovulation and embryo transfer (MOET)
  1.    can increase the rate of progress in dairy cattle
  2.    allows progeny testing of males
  3.    allows progeny testing of females
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 30. Karyoplast is
  1.    cells devoid of cell wall
  2.    nuclei
  3.    nuclei with only some residual plasma membrane
  4.    cell with nucleus
 Discuss Question
Answer: Option C. -> nuclei with only some residual plasma membrane
Answer: (c).nuclei with only some residual plasma membrane

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