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MCQs

Total Questions : 60 | Page 4 of 6 pages
Question 31. Which of following terms denotes triploidy?
  1.    3n
  2.    4n+1
  3.    4n
  4.    2n+2
 Discuss Question
Answer: Option A. -> 3n
Answer: (a).3n
Question 32. Offspring that have new combinations of traits than their parents are called
  1.    F1 type
  2.    F2 type
  3.    parental type
  4.    recombinant type
 Discuss Question
Answer: Option D. -> recombinant type
Answer: (d).recombinant type
Question 33. Which of following denotes number of chromosomes in a monosomic zygote?
  1.    2n-1
  2.    2n+1
  3.    2n-2
  4.    2n+2
 Discuss Question
Answer: Option A. -> 2n-1
Answer: (a).2n-1
Question 34. When a chromosome fragment is lost its called
  1.    deletion
  2.    inversion
  3.    duplication
  4.    removal
 Discuss Question
Answer: Option A. -> deletion
Answer: (a).deletion
Question 35. How does a mitochondrial disease mostly affect which of following?
  1.    immune system
  2.    respiratory organs
  3.    heart
  4.    nervous system
 Discuss Question
Answer: Option D. -> nervous system
Answer: (d).nervous system
Question 36. Which of following denotes number of chromosomes in a trisomic zygote?
  1.    2n-2
  2.    2n-1
  3.    2n+1
  4.    2n+2
 Discuss Question
Answer: Option B. -> 2n-1
Answer: (b).2n-1
Question 37. When chromosomes are not distributed properly during meiosis, it leads to
  1.    unequal chromosomes
  2.    non disjunction
  3.    Mis disjunction
  4.    un disjunction
 Discuss Question
Answer: Option B. -> non disjunction
Answer: (b).non disjunction
Question 38. How many children are affected with Down's syndrome in USA every year?
  1.    1 in 10,000
  2.    1 in 500
  3.    1 in 10
  4.    1 in 800
 Discuss Question
Answer: Option D. -> 1 in 800
Answer: (d).1 in 800
Question 39. Which of following chromosomes is present in a person with Klinefelter's syndrome?
  1.    XYY
  2.    XXY
  3.    YYY
  4.    XXX
 Discuss Question
Answer: Option B. -> XXY
Answer: (b).XXY
Question 40. Despite having different structures, X and Y chromosomes behave like
  1.    paralogs
  2.    Heterologs
  3.    homologs
  4.    Orthologs
 Discuss Question
Answer: Option C. -> homologs
Answer: (c).homologs

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