http://www.newsweek.com/genome-defined-human-genetic-blueprint-fully-sequenced-first-time-decoded-complete-project-1694061

Scientists have fully sequenced the human genome for the first time—something that has been a scientific goal for decades.

During sequencing, the DNA of an organism is chopped up, read, and then re-assembled. Sequencing a genome can be thought of as something similar to putting together a complicated puzzle.