The salivary gland chromosomes in the dipteran larvae are useful in gene mapping because

What are the full forms of $DNA$ and $RNA$?

The length of $DNA$ in $E. coli$ is:

The molecular weight of $DNA$ in yeast is .........

Read the following statements and choose the set of correct statements:
$(a)$ Euchromatin is loosely packed chromatin
$(b)$ Heterochromatin is transcriptionally active
$(c)$ Histone octamer is wrapped by negatively charged $DNA$ in nucleosome
$(d)$ Histones are rich in lysine and arginine
$(e)$ $A$ typical nucleosome contains $400 \ bp$ of $DNA$ helix
Choose the correct answer from the options given below:

Select the option that represents the organisms in ascending order of their $DNA$ length.