Nucleic acid was first discovered from . . . . . . .

If the transforming principle is transferred to the $R$-strain,what characteristics will the $R$-strain acquire?
$(i)$ Formation of a smooth polysaccharide coat
$(ii)$ Becomes non-virulent
$(iii)$ Becomes virulent
$(iv)$ Does not form a smooth polysaccharide coat

What is the genetic material in most organisms?

Which sequence is used to determine the phylogenetic history of an organism?

What name did $Friedrich$ $Miescher$ give to the weakly acidic substance found in the nuclei of human white blood cells?

$DNA$,present in the nucleus,was named as 'Nuclein' by