In prokaryotes, the DNA (chromosome) is in contact with the cellular cytoplasm and is not in a housed membrane-bound nucleus. In eukaryotes, however, the DNA takes the form of compact chromosomes ...

Modern eukaryotic cells have proteins that enable chromosome segregation during cell division, new discoveries shed light on their origin in simpler prokaryotic organisms. Modern nucleated (eukaryotic ...

A living organism's genomic DNA, which is contained in each cell, is typically far longer than the organism itself. This poses a formidable challenge for DNA compaction in the cell nucleus and its ...

Transposons, mobile DNA elements found in the genomes of prokaryotic and eukaryotic organisms, move randomly from one site in a chromosome to another using a process catalyzed by transposases. This ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Humans have been engineering yeast “for thousands of years ...

Scientists have created the first man-made chromosome for a complex-celled organism -- a feat hailed Friday as a big step towards acquiring the controversial ability to redesign plants or animals. A ...

The chromosome associated with male development, which is the last mysterious piece of the human genome, has been fully sequenced by a team of more than 100 researchers around the world, including ...

Scientists have finally filled the gaps in the sequence of the human Y chromosome, 20 years after the first draft of its DNA code was published. The work reveals a complete catalog of the genes in the ...

Scientists say an African-American male's odd genetic signature suggests that the human Y chromosome's lineage goes back further in time than they thought — perhaps due to interbreeding with other ...

The molecules that silence a woman’s second X chromosome can confuse the immune system, a new study suggests. By Carl Zimmer Women are much more likely than men to have their immune system turn ...