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MCQs

Total Questions : 189 | Page 15 of 19 pages
Question 141. During meiosis, genetic recombination involves pairing of
  1.    non homologous chromosomes
  2.    super coiled chromosomes
  3.    loosely coiled chromosomes
  4.    homologous chromosomes
 Discuss Question
Answer: Option D. -> homologous chromosomes
Answer: (d).homologous chromosomes
Question 142. Recessive genetic disorders include
  1.    Albinism
  2.    Cystic fibrosis
  3.    Galactosemia
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 143. In eukaryotes genetic recombination can lead to a novel set of genetic information that can be passed on from the parents to offspring during
  1.    mitosis
  2.    meiosis
  3.    genetic expression
  4.    replication
 Discuss Question
Answer: Option B. -> meiosis
Answer: (b).meiosis
Question 144. In both meiotic and mitotic cells, recombination between homologous chromosomes is a common mechanism used in
  1.    DNA replication
  2.    transcription
  3.    DNA repair
  4.    translation
 Discuss Question
Answer: Option C. -> DNA repair
Answer: (c).DNA repair
Question 145. Cells that have lost SUP4 gene acquire _____ pigment and are visibly distinguishable from others.
  1.    red
  2.    blue
  3.    green
  4.    pink
 Discuss Question
Answer: Option A. -> red
Answer: (a).red
Question 146. Cells mutant in _____ gene can be selected by using 5-fluoro orotic acid, which is turned into ____ products by wild type protein.
  1.    SUP4, toxic
  2.    SUP4, non-toxic
  3.    URA3, toxic
  4.    URA3, non-toxic
 Discuss Question
Answer: Option C. -> URA3, toxic
Answer: (c).URA3, toxic
Question 147. Phosphoribosyl amino-imidazole carboxylase is a component of _______ biosynthesis pathway.
  1.    pyrimidine
  2.    purine
  3.    both purine and pyrimidine
  4.    only adenine
 Discuss Question
Answer: Option B. -> purine
Answer: (b).purine
Question 148. The replicating plasmid vectors in yeast can be divided broadly into how many categories?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 149. Yeast centromeric plasmid (YCp50) contains ampicillin and tetracycline resistant gene.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 150. CEN4 in YCp50 is an example of _______
  1.    tetracycline resistant gene
  2.    ampicillin resistant gene
  3.    chromosomal centromeric sequence
  4.    autonomously replicating sequence
 Discuss Question
Answer: Option C. -> chromosomal centromeric sequence
Answer: (c).chromosomal centromeric sequence

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