The UCSC Genome Browser is a web-based tool serving as a multi-powered microscope that allows researchers to view all 23 chromosomes of the human genome at any scale from a full chromosome down to an individual nucleotide. The browser integrates the work of countless scientists in laboratories worldwide, including work generated at UCSC, in an interactive, graphical display.
Zoomed out, the coarse-level view shows early chromosome maps as determined by electron microscopy, then the browser drills down to levels of increasing detail, focusing first on chromosome bands,