The DNA is packaged... it starts by being wrapped around special protein molecules (histones). This forms a nucleosome.
Does this help?
A floodplain (or floodplain) is a generally flat area of land next to a river or stream. It stretches from the banks of the river to the outer edges of the valley. A floodplain consists of two parts. The first is the main channel of the river itself, called the floodway.
Any substance that triggers an immune response is an antigen(s).
I dont remember much of biology but i do remember my teacher saying something about phosphate backbone, i know its not much help. sorry!!
