Plant cells are bombarded with high-velocity micro-particles of ........... coated with $DNA$ in a method known as gene gun.

Recombinant $\text{DNA}$ is directly injected into the nucleus of an animal cell by $-$

The process of joining together different $DNA$ fragments is often referred to as

Palaeontologists unearthed a human skull during excavation. $A$ small fragment of the scalp tissue was still attached to it. Only a little $DNA$ could be extracted from it. If the genes of the ancient man need to be analysed,the best way of getting a sufficient amount of $DNA$ from this extract is:

Which of the following steps is/are catalysed by $Taq$ polymerase in a $PCR$?

The technique used to make numerous copies of a specific segment of $DNA$ quickly and accurately is