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MCQs

Total Questions : 232 | Page 21 of 24 pages
Question 201. In mammals the Y chromosome carries the gene
  1.    SRY
  2.    RSY
  3.    RYS
  4.    YSR
 Discuss Question
Answer: Option A. -> SRY
Answer: (a).SRY
Question 202. All Y linked genes are
  1.    homozygous
  2.    hemizygous
  3.    heterozygous
  4.    none of above
 Discuss Question
Answer: Option B. -> hemizygous
Answer: (b).hemizygous
Question 203. The actual genetic code used by cells is
  1.    double code
  2.    triplet code
  3.    single code
  4.    tetra code
 Discuss Question
Answer: Option B. -> triplet code
Answer: (b).triplet code
Question 204. In eukaryotes the initiator codon for methionine is
  1.    AUG
  2.    GUG
  3.    CUG
  4.    UAA
 Discuss Question
Answer: Option C. -> CUG
Answer: (c).CUG
Question 205. The type of RNA which carries genetic information copied from DNA in form of series of three base codes is
  1.    mRNA
  2.    tRNA
  3.    rRNA
  4.    Cytoplasmic RNA
 Discuss Question
Answer: Option A. -> mRNA
Answer: (a).mRNA
Question 206. A sequence of codons that runs from a specific start site to a terminating codon is called a
  1.    frame
  2.    reading frame
  3.    reading site
  4.    reading cell
 Discuss Question
Answer: Option B. -> reading frame
Answer: (b).reading frame
Question 207. An operon is made up of
  1.    promoter
  2.    operator
  3.    structural genes
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 208. In Jacob- Monod model, the operator prevents the binding of
  1.    repressor
  2.    expresser
  3.    operon
  4.    telomere
 Discuss Question
Answer: Option A. -> repressor
Answer: (a).repressor
Question 209. Mutations at the promoter block the initiation of
  1.    translation
  2.    replication
  3.    transcription
  4.    Polymerization
 Discuss Question
Answer: Option C. -> transcription
Answer: (c).transcription
Question 210. Outbreeding increases
  1.    homozygosity
  2.    heterozygosity
  3.    genetic linkage
  4.    gene pool
 Discuss Question
Answer: Option B. -> heterozygosity
Answer: (b).heterozygosity

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