51. Which of the following is related with genetic engineering ?
52. What is C - DNA ?
A. circular DNA
B. Cloned DNA
C. DNA produced from reverse transcription of RNA
D. Cytoplasmic DNA
Answer : Option C
53. Which of the bollowing statement is incorrect ?
A. cosmid contains gene coding for viral protein
B. cosmid relpicates like plasmids
C. cosmid has antibioticresistant marker gen
D. cos sit has 12 bases helping to join complete genome to make it circular
Answer : Option A
54. The genetic recombinants obtained by in sertion of plasmid into 1 phage genome is called
55. TATAATG sequnce near the RNA start point of phokaryotic promoter is.....
56. Exonucleases cleaving nucleotides one at a time from the end of polynucleotide chain are.
A. Specific for 5’ end of RNA strand
B. specific for 3’ end of RNA strand
C. specific for both 5’ and 3’ ends of nucleotide strand
D. Non- specific for 5’ and 3’ ends of nucleotide
Answer : Option B
57. Genes that are involved in turning on or off the transcription of a set of structural genesare called
A. Polymorphic genes
B. operator gene
C. Rebundant gene
D. Regulatory gene
Answer : Option C
58. Enzymes used in PCR is ....
59. What are structure labelled A & B respectively
A. EcoRv restriction endonuclease and E coRv ligase
B. EcoRv ligase and EcoRv nuclease and EcoRvmethlase
C. Eco–– Rv restriction endo EcoRv methylase
D. EcoRv Polymerase and EcoRv methylase
Answer : Option A
Can you pick up from the figure how bacteria protects its own genone from degradationby restreiction endonuclease ?
A. site specific coupling
B. site specific oxidizing
C. site specific oxidizing
D. site specific methylases
Answer : Option D