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................
B
.........
C
What are the two properties of bacteria help scientists in cloning :
Transformation and Antibiotic Resistance
Scientists use plasmids as  ................... to transfer DNA into host cells for replication
Vector
........................ are double-stranded, small, circular DNA that occur naturally in bacteria and yeast.
plasmid
.................................. is a solution of DNA fragments of a known lengths used as reference in gel electrophoresis
DNA ladder 
Scientists use ....................... to identify cells that have taken up the gene of interest
GFP " green fluorescent protein "
.......
B
......
B
Which of the following are probably siblings?
C and D
Dideoxyribonucleotide chain-termination is a method of .......................
sequencing DNA
,.......
B
..........
A
Which methods commonly used to separate molecules by movement due to size and electrical charge?
gel electrophoresis
Which of the following seals the sticky ends of restriction fragments to make recombinant DNA?
DNA ligase
..........
B
........
A
.........
A
...........
D
..........
C
............
C
......
D