Euchromatin is more tightly packed because it has a higher gene density. t/f

The answer is false.

Euchromatin is a lightly packed form of chromatin not tightly. Euchromatin is usually described as active chromatin, because DNA around the histones (which together form nucleosome) is loosely wrapped enabling transcription. So, euchromatin is rich in genes that are actively transcribed (RNA polymerase, transcription factors and other proteins can bind to DNA).

Under the microscope, euchromatin appears light in color, while heterochromatin (condensed DNA) is dark.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.