Q.24 Which one of the following is made up of radioactively labelled nucleotides?
A) Phage DNA C) Recombinant DNA
B) Genomic Library D) Gene Probe
Q.25 A technique in transgenic animals in which desired gene is inserted into the eggs of animal is
called:
A) Embryonic Stem Cell mediated Transfer C) Retro-virus mediated gene Transfer
B) Microinjection D) Virus vectors
Q.26 The modified plasmid or phage DNA is called:
A) Clone DNA C) cDNA
B) Recombinant DNA D) rDNA
Q.27 Restriction endonucleases cleave the __________ of duplex DNA.
A) Nitrogenous base C) Phosphodiester bond
B) Base sugar D) Hydrogen bond
Q.28 The enzyme which is responsible for the formation of bond between two double stranded DNA
fragments is:
A) Endonuclease C) Ligase
B) Urease D) Helicase