Who among the following scientists developed cytochemical technique for the presence of $DNA$
Johannsen
Feulgen and Rossenbeck
McClintock
M.H.F. Wilkins
An auxotroph is
In man, sperms contain autosomes and
In $1980$, F. Sanger was awarded Nobel prize second time to be shared by Gilbert and Maxum for their work on
Nucleotide arrangement in $DNA$ can be seen by