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MCQs

Total Questions : 60 | Page 4 of 6 pages
Question 31. Name the phenomenon which can break the occurrence of linkage?
  1.    Crossing over
  2.    Linkage
  3.    Reconstruction
  4.    Breakage
 Discuss Question
Answer: Option A. -> Crossing over
Answer: (a).Crossing over
Question 32. Two genes are 70cM apart, calculate the recombination frequency?
  1.    50%
  2.    100%
  3.    25%
  4.    23%
 Discuss Question
Answer: Option A. -> 50%
Answer: (a).50%
Question 33. Name the organism whose first genetic map was made?
  1.    Rat
  2.    Arabidopsis
  3.    Fly
  4.    Drosophila
 Discuss Question
Answer: Option D. -> Drosophila
Answer: (d).Drosophila
Question 34. Failure in which of the following phenomenon would result in linkage?
  1.    Law of dominance
  2.    Law of segregation
  3.    Law of independent assortment
  4.    Law of separation
 Discuss Question
Answer: Option C. -> Law of independent assortment
Answer: (c).Law of independent assortment
Question 35. Name the sites of DNA, which have a high probability of crossing over?
  1.    Cold spots
  2.    Hot spots
  3.    Covalent bond
  4.    Hydrophobic bond
 Discuss Question
Answer: Option B. -> Hot spots
Answer: (b).Hot spots
Question 36. Genes of sex linked characters are located on the ___________
  1.    Chromosome 18
  2.    Chromosome 13
  3.    Chromosome 14
  4.    Sex chromosome
 Discuss Question
Answer: Option D. -> Sex chromosome
Answer: (d).Sex chromosome
Question 37. In sex linkage, reciprocal cross yield identical results.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 38. Which of the following is X-linked recessive disorder?
  1.    Color blindness
  2.    Sickle cell anemia
  3.    PTC tasting
  4.    Albinism
 Discuss Question
Answer: Option A. -> Color blindness
Answer: (a).Color blindness
Question 39. Which of the following statement is NOT true regarding Partial sex linkage?
  1.    The X-Y chromosome pair during meiosis
  2.    Pairing occurs in the terminal region
  3.    The inheritance pattern in the PAR region show sex-linkage
  4.    PAR stands for the pseudo autosomal region
 Discuss Question
Answer: Option C. -> The inheritance pattern in the PAR region show sex-linkage
Answer: (c).The inheritance pattern in the PAR region show sex-linkage
Question 40. Identify the disease which causes excessive production of uric acid.
  1.    Duncan muscular dystrophy
  2.    Lesch-Nyhan syndrome
  3.    Hunter syndrome
  4.    Hemophilia
 Discuss Question
Answer: Option B. -> Lesch-Nyhan syndrome
Answer: (b).Lesch-Nyhan syndrome

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