How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus? Long, slender DNA molecules wind around proteins and fold in complex ways to form chromosomes.

The observation by electron microscopists that ... chromosomes that can be seen with a light microscope. Once a cell has divided, its chromosomes uncoil again. Comparing the length of metaphase ...

Telomeres are repetitive sequences of DNA capping the ends of chromosomes and protecting them from deterioration or from fusion with neighboring chromosomes. Telomeres shorten progressively over ...

atomic force microscopy, and cryo-electron tomography techniques and observed that the chromatin emanated from chromosomes ...

The image shows a scanning electron micrograph of 6 tardigrades in their tun state. When tardigrades dry out they retract their legs and heads within their cuticle, forming a ball like 'tun.