Which form of $RNA$ has a structure resembling a clover leaf?

The link between generations is provided by:

What would happen if histones were to be mutated and made rich in acidic amino acids such as aspartic acid and glutamic acid in place of basic amino acids such as lysine and arginine?

In a bacterial chromosome,the genes are held together by which of the following?

The length of a $DNA$ molecule is much greater than the diameter of the nucleus in a eukaryotic cell. How is $DNA$ packaged?

Which of the following is considered a 'living chemical'?