The technique of bombarding plant cells with high velocity microparticles of gold or tungsten,coated with $DNA$,is known 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:

Ethidium bromide stained agarose gel is exposed to $.......,$ to observe $\text{DNA}$ as bright orange coloured bands.

When $DNA$ fragments stained with ethidium bromide are viewed under $UV$ radiation,how do they appear?

Which of the following is the correct sequence for $PCR$?

What is the effect of high temperature $(94^{\circ}C)$ on $DNA$?