How the Alexander Flemming discovered Penicillium?

Alexander Flemming disocovered penicillin in 1928 while working with

A. Flemming isolated penicillin from:

Who discovered genes?

Choose the correct combination {:("List-I","List-II",),("(A) Walter sutton","(I) Discovered penicillin",),("(B) Thomas Hung Morgan","(II) Discovered chromosomal basis of heridity",),("(C )James Watson","(III) Described the phenomon of linkage and crossing over",),("(D) Alexander Fleming","(IV) Discovered double helical structure of DNA",):}

T.O. Diener discovered a

Viroids were discovered by

Who discovered aureomycin?

Who discovered mitosis ?

Who discovered mitosis ?

Nanotubes were discovered by