The Final Step.

A scientific triumph.

1. Fully sequencing the Y chromosome was once considered an impossible task. The chromosome that makes biological males is chock-full of repetitive and inverted stretches of DNA, making it challenging to put stretches of deciphered DNA back together in the right order. Now, using state-of-the-art techniques, researchers report today in a pair of papers in Nature that they have succeeded in sequencing not just one Y chromosome, but dozens from men from around the world. In doing so, they have completed the final step in the long-awaited goal of completely sequencing the human genome. (Source: science.org)