 As sequencing has become less expensive , researchers have sequenced the genomes of many organisms , using a process called genome assembly , which utilizes computational tools to stitch together sequences from many different fragments . These technologies were used to sequence the human genome in the Human Genome Project completed in 2003 . New high @-@ throughput sequencing technologies are dramatically lowering the cost of DNA sequencing , with many researchers hoping to bring the cost of <unk> a human genome down to a thousand dollars . 
