$DNA$ elements, which can switch their position, are called:

How many hydrogen bonds connect adenine to thymine?

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?

$A$ nucleosome has a histone octamer made up of:

What are the properties of the two strands of a double-stranded $DNA$ molecule?

The distance between two adjacent base pairs in a $DNA$ double helix is: