The human body has 46 DNA molecules. These DNA molecules are organized into 23 pairs of chromosomes.
Each chromosome contains a single long DNA molecule. Humans have a diploid genome, meaning they inherit one set of chromosomes from their mother and one set from their father.
It's important to note that the human genome also includes mitochondrial DNA, which is separate from the DNA found in the nucleus of each cell. Mitochondrial DNA is inherited only from the mother.
While the human body has 46 DNA molecules, only 3 billion nucleotide pairs need to be sequenced to obtain complete information about a representative human genome. This is because the two chromosomes in each pair are almost identical.