Match the following column I with column II.

Column I                                      Column II

A. Agrostology                              1. Earth

B. Smallest flowering plant            2. Genetic engineering

C. Tectonic                                   3.Migration

D. Ecesis                                      4.Wolffia

E. Euphanix                                  5.Grass

Codes

       A     B     C     D     E

(a)   5     4     1     3     2   

(b)   1     2     3     4     5

(c)   2     3     1     5     4

(d)   5     4     3     2     1

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Biolistic (gene gun) is suitable for

(a) disarming pathogen vectors

(b) transformation of plant cell

(c) constructing recombinant DNA by joining with vectors

(d) DNA fingerprinting

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A mixture containing DNA fragments, a, b, c and d, with molecular weights of a+b = c, a > b and d>c, was subjected to agarose gel electrophoresis. The positions of these fragments from anode to cathode sides of the gel would be

(a) b, a, c, d

(b) a, b, c, d

(c) c, b, a, d

(d) b, a, d, c

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Which of the following DNA sequences qualifies to be designated as a palindrome?

(a) 5 - GACCAG - 3’ in one strand

(b) 3’- GACCAG - 5’ in one strand

(c) 5’- GACGAG- 3’ 3’- CTGGTC - 5’

(d) 5’- AGCGCT - 3’ 3’- TCGCGA - 5’

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pBR322, which is frequently used as a vector for cloning gene in E. coli is a/an

(a) original bacterial plasmid

(b) modified bacterial plasmid

(c) viral genome

(d) transposon

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A gene from one organism joined to the regulatory sequence of another organism makes a

    1. Junk DNA
    2. Chimeric DNA
    3. Recombinant DNA
    4. More than one is correct
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To be useful in genetic engineering a vector must have

    1. An origin for replication
    2. Low copy number
    3. Low rates of multiplication
    4. Many cloning sites for the same enzyme
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In 1960’s two enzymes were discovered in bacteria that were responsible for providing immunity against bacteriophages. One was Restriction Endonuclease and the other was

    1. Methylase
    2. Exonuclease
    3. Aminotransferase
    4. Terminal Transferase
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 E.coli is  a commonly used host for gene cloning because

(a) It is free from elements that interfere with replication and recombination of DNA

(b) It is easy to transform

(c) It supports replication of inserted DNA.

(d) All of these

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A gene has been inserted into a vector for the purpose of cloning the sequence only. This vector is called

a.  Suppression vector

b. Expression vector

c. Cloning vector

d. None of these

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