Human cell’s DNA is one of the main targets for personal medicine and NGS: Next generation of Sequencing helps us read all human sequence nucleotides by nucleotides.
Most cells in our body have two copies of the genome with 6 billion base pairs of DNA. Germ cells only have one copy of the genome made up of 3 billion base pairs of DNA. When sperm and egg cells combine, that results in two genomes. Some cells like skin, hair, and nail cells don’t have any genomes.