Buttons and flies help biologists solve longtime DNA mystery

Biologists at Johns Hopkins University have uncovered an important clue in the longtime mystery of how long strands of DNA fold up to squeeze into microscopic cells, with each pair of chromosomes aligned to ensure perfect ...

Y chromosomes reveal population boom and bust in ancient Japan

Researchers at the University of Tokyo conducted a census of the Japanese population around 2,500 years ago using the Y chromosomes of men living on the main islands of modern-day Japan. This is the first time analysis of ...

Dark centers of chromosomes reveal ancient DNA

Geneticists exploring the dark heart of the human genome have discovered big chunks of Neanderthal and other ancient DNA. The results open new ways to study both how chromosomes behave during cell division and how they have ...

Without Dna2, genes can jump into DNA breaks

Cells have in place a number of mechanisms to protect the integrity of the genome, including processes that repair mistakes that may occur during DNA replication. The enzyme Dna2 participates in DNA repair, but little is ...

Where sexes come by the thousands

By the end of every spring semester, students in my introductory biology course at Vanderbilt University have become quite familiar with natural variation in human sex chromosomes. They know, for example, that most females ...

Scientists map a complicated ballet performed in our cells

For years, scientists have looked at human chromosomes, and the DNA they carried, poring over the genetic code that makes up every cell for clues about everything from our eye color to congenital diseases. In a new study, ...

page 1 from 8