Researchers watch the protein condensin in action.

Researchers map learning-induced chromatin alterations in mouse brain cells, and find that many affect autism-associated genes.

New technologies reveal the dynamic changes in mouse and human embryos during the first week after fertilization.

The switch from maternal factors involves dynamic reprogramming of the zygotic genome.

New microscopy techniques reveal that heterochromatin—the condensed, seemingly dormant portions of DNA—is not as dense as scientists once thought.

A test tube-based genome-labeling technique has been brought under the microscope.

See how researchers visualize regions of active genes.

A study on human cells reveals how cellular aging affects the 3-D architecture of chromosomes.

A growing toolbox for surveying the activity of entire genomes

By manipulating DNA sequences that guide genome-folding, researchers confirm an existing model of chromatin structure inside the nucleus.