The separation of DNA fragments in gel electrophoresis is achieved through a sieving effect provided by the _________ gel.
DNA fragments separate through sieving effect provided by the agarose gel.
Question 172 of 535
📘 CLASS XII
When recombinant DNA is transferred into *E. coli*, it could replicate using the new host’s DNA polymerase enzyme and make multiple copies because it is a circular autonomously replicating DNA created _________.
Recombinant DNA is a circular autonomously replicating DNA created in vitro.
Question 173 of 535
📘 CLASS XII
The DNA is cut with restriction enzymes after it is isolated in a pure form, free from other macromolecules like RNA, proteins, polysaccharides and _________.
The purified DNA must be free from lipids and other macromolecules.
Question 174 of 535
📘 CLASS XII
The ability of sexual reproduction to provide opportunities for variations is advantageous over asexual reproduction, which primarily preserves the genetic _________.
Asexual reproduction preserves the genetic information.
Question 175 of 535
📘 CLASS XII
The approach to understanding natural phenomena, especially natural sciences, became anthropocentric ever since the days of which philosopher?
Rene Descartes, the French philosopher, influenced the whole approach to understanding natural phenomena to become anthropocentric.
Question 176 of 535
📘 CLASS XII
Herbert Boyer completed his graduate work in 1963 at which university?
Herbert Boyer completed graduate work at the University of Pittsburgh, in 1963.
Question 177 of 535
📘 CLASS XII
In 1966, Herbert Boyer took over an assistant professorship at which institution?
Boyer took over assistant professorship at the University of California at San Francisco in 1966.
Question 178 of 535
📘 CLASS XII
Herbert Boyer performed studies on restriction enzymes of which specific bacterium in 1969?
Boyer performed studies on restriction enzymes of the E. coli bacterium in 1969.
Question 179 of 535
📘 CLASS XII
What term is used for the overhanging stretches left on DNA strands after restriction enzymes cut them in a particular fashion?
The enzymes left ‘sticky ends’ on the DNA strands, which made pasting pieces of DNA precise.
Question 180 of 535
📘 CLASS XII
Stanley Cohen studied small ringlets of DNA that float freely in the cytoplasm of certain bacterial cells and replicate independently, known as:
Cohen had been studying small ringlets of DNA called plasmids that replicate independently.
