Restriction endonuclease
cuts the DNA molecule randomly
cuts the DNA molecule at specific sites
restricts the synthesis of DNA inside the nucleus
restricts the synthesis of DNA inside the nucleus
B.
cuts the DNA molecule at specific sites
Restriction endonuclease is a type of enzyme that can cleave molecules of DNA at a particular site called Restriction site having polindromic sequence. These enzymes are produced by many bacteria and protect the cell make leaving and destroying the DNA of invading viruses. Now a days, restriction enzymes are widely used in the techniques of genetic engineering.
A gene whose expression helps to identify transformed cell is known as
Selectable marker
Vector
Plasmid
Plasmid
During DNA replication, Okazaki fragments are used to elongate
The leading strand towards replication fork
The lagging strand towards replication fork
The leading strand away from replication fork
The leading strand away from replication fork
What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis?
The larger the fragment size, the farther it moves
The smaller the fragment size, the farther it moves
Positively charged fragments move to farther end
Positively charged fragments move to farther end
Lysozyme that is present in perspiration, saliva and tears, destroys
certain fungi
certain types of bacteria
all viruses
all viruses
