DNA is the blueprint for the structure of an organism.
Genetic material is composed of sequences of structures called nucleotides.
The sequence of nucleotides in DNA determine the traits of an organism.
DNA can replicate in order to make copies of itself to pass genetic information down to the next generation of organisms.
Depending on the stage of the cell cycle, DNA can be stored as chromosomes or chromatin.
Each fiber of DNA is called a chromosome.
Image: DNA is attached to proteins and can forms long fibers called chromatin.
Source: Concepts in Biology Twelfth Edition Eldon Enger, et al.