The vast amount  of genomic  DNA in a eukaryotic  cell is strongly  packaged  in chromosomes  having  within  a specialized  organelle and  the nucleus.  This very vast amount of eukaryotic nuclear the DNA is strongly packaged in chromosomes. By the exception of the sex chromosomes, diploid eukaryotic organisms like as humans have two copies of each chromosome one inherited from the father and one from the mother. The Chromosomes have both protein and DNA. Most of the protein on a weight basis is histones but there are also various thousands of other proteins found in far less abundance and these are collectively called as NHP (nonhistone proteins). This nuclear DNA-protein complex is called as chromatin. The chloroplasts and mitochondria of eukaryotic cells also have DNA but unlike the nuclear DNA this containing of double-stranded circular molecules resembling bacterial chromosomes.