In fact, the mere presence of a nucleus is considered one of the defining features of a eukaryotic cell. This structure is so important because it is the site at which the cell's DNA is housed and ...

additional DNA is found on one or more rings called plasmids. Eukaryotic cell DNA in a nucleus, plasmids are found in a few simple eukaryotic organisms. Prokaryotic cell DNA is a single molecule ...

Each of us has enough DNA to reach from here to the sun and back, more than 300 times. How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus? Histones are a ...

For example, DNA is stored, replicated and processed in the eukaryotic cell's nucleus, which is itself surrounded by a ...

offering new clues about the relationship between these microbes and the rise of early eukaryotic cells, many researchers tell The Scientist it’s entirely possible that some questions will never be ...

Transposons, so-called jumping genes, are a threat to genomes, so plants work hard to prevent them from mobilizing and ...

ATP-dependent DNA ligases are found in all eukaryotic species. Mammalian cells contain four DNA ligase isozymes. Amino acid-sequence comparisons suggest that a core catalytic domain common to all ...

DNA segments that can move from one part of the genome to another—are key to bacterial evolution and the development of ...

Every day, billions of cells in your body divide, helping to replace old and injured cells with new ones. And each time this ...