Heterochromatin is
(a) Darkly stained region
(b) Loosely packed chromatin
(c) Transcriptionally inactive 

Select true (T) or false (F) for the following statements and choose the correct option.

A. QB bacteriophage has RNA as genetic material.

B. Free $2\text{'}\mathrm{OH}$ of RNA makes it more labile and easily degradable.

C. The experiment of Hershey and Chase gave unequivocal proof that DNA is the genetic material.

A. The nascent RNA synthesised by RNA polymerase II is called $\mathrm{hnRNA}.$

B. Splicing is the process of removal of introns and joining of exons in a defined order.