The Human Genome Project Completion: Frequently Asked QuestionsThe human genome contains approximately 3 billion of these base pairs, which reside in the 23 pairs of chromosomes within the nucleus of all our cells. Each chromosome contains hundreds to thousands of genes, which carry the instructions for making proteins. Each of the estimated 30,000 genes in the human genome makes an average of three proteins.
We get our traits from a lot more than just the 23 pairs of chromosomes.
But the traits are on the chromosomes.