Genes: functional unit of hereditary that we get (trait), smallest unit of genetic material, which is a short segment or section within the DNA, and code for specific protein
Genome: the entire genetic complement or set of genetic material of an organism consisting coding, and non-coding regions which pertain all the DNA sequences found in chromosomes and other genetic element
Chromosome: An organized package of DNA and protein that contain genome
Chromatin: A complex of DNA and protein (histone) mixed together in a condensed form (chromosome), and also a precursor structure to develop chromosome
Chromatids: one of the two identical halves of a chromosome that has been replicated in preparation for cell division
