The UCSC Human Genome Browser is a web-based tool that provides a comprehensive and interactive display of genome annotations. It allows users to view and analyze various types of genomic data, including gene predictions, mRNA alignments, homology with other species, and single nucleotide polymorphisms. The browser displays these annotations as a stack of coregistered tracks, enabling users to explore the genome at different scales. It supports text and sequence-based searches, and users can add their own custom tracks for educational or research purposes. The browser is highly integrated with the BLAT sequence search tool and is maintained by the University of California, Santa Cruz, with contributions from collaborators worldwide. The browser serves over 50,000 pages per day to more than 3,000 users. It includes a wide range of annotations, such as gene predictions, homology data, and sequence-tagged sites. The browser is designed to be fast, stable, and extensible, with a user-friendly interface. It is used by researchers to analyze the human genome and has been adapted for other genomes, including the mouse genome. The browser's underlying database is built on MySQL and is optimized for efficient data retrieval. The browser also provides tools for downloading DNA sequence data and for accessing detailed information about specific genomic regions. The UCSC Human Genome Browser is a valuable resource for exploring the human genome and is widely used by the scientific community.The UCSC Human Genome Browser is a web-based tool that provides a comprehensive and interactive display of genome annotations. It allows users to view and analyze various types of genomic data, including gene predictions, mRNA alignments, homology with other species, and single nucleotide polymorphisms. The browser displays these annotations as a stack of coregistered tracks, enabling users to explore the genome at different scales. It supports text and sequence-based searches, and users can add their own custom tracks for educational or research purposes. The browser is highly integrated with the BLAT sequence search tool and is maintained by the University of California, Santa Cruz, with contributions from collaborators worldwide. The browser serves over 50,000 pages per day to more than 3,000 users. It includes a wide range of annotations, such as gene predictions, homology data, and sequence-tagged sites. The browser is designed to be fast, stable, and extensible, with a user-friendly interface. It is used by researchers to analyze the human genome and has been adapted for other genomes, including the mouse genome. The browser's underlying database is built on MySQL and is optimized for efficient data retrieval. The browser also provides tools for downloading DNA sequence data and for accessing detailed information about specific genomic regions. The UCSC Human Genome Browser is a valuable resource for exploring the human genome and is widely used by the scientific community.