A gene whose expression helps to identify transformed cell is known as

• Selectable marker

• Vector

• Plasmid

• Plasmid

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

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

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