Streptomycin is produced by or from which micro-organism streptomycin is prepared

In plant $A,$ $2 n=12$ and in plant $B, 2 n=16$. Then the ploidy number of cross breeding plant is

Golden rice is a promising transgenic crop. When released for cultivation, it will help in

Goeddel and his associates biosynthesised the $HGH$  by genetic engineering by

Probes, used in $DNA$ fingerprinting, are initially