Learn to use Map Viewer, a genome browser from the NCBI. Map Viewer organizes and displays dozens of species genomes, and provides additional context with appropriate annotations for the genomic sequences. Many levels of detail are provided for each genome. You have access to the organism homepage, the complete genome view, the map view of a selected region of interest and the sequence view presenting the sequencing data and annotation for a very specific genomic region. Add variation data, easily view homologs in many species, and more. Extensive integration with other NCBI tools enables researchers to link quickly to relevant additional details.

You will learn:

  • to perform basic and advanced searches for discovery of information
  • to search a genome with a sequence using BLAST
  • to employ the Maps and Options features to customize your views
  • to utilize additional tools to find clones and jump to chromosomal regions
  • to utilize extensive links to other NCBI resources that may be helpful to your research


This tutorial is a part of the tutorial group Genome Browsers. You might find the other tutorials in the group interesting:

Ensembl: Ensembl Genome Browser

Integrated Microbial Genomes (IMG): IMG is a powerful community resource for the comparative analysis and annotation of microbial genome data.

GBrowse: GBrowse User Introductory Tutorial

Overview of Genome Browsers: Various Genome Browsers examined

Ensembl Legacy: Older version of Ensembl Genome Browser


Genome Databases (euk) : Genomic databases or repositories primarily aimed at eukaryotic organisms. Some may contain prokaryotic data as well.

NCBI : This category includes resources maintained at the National Center for Biotechnology Information (NCBI).


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Recent BioMed Central research articles citing this resource

Weiler Sarah et al., ID helix-loop-helix proteins as determinants of cell survival in B-cell chronic lymphocytic leukemia cells in vitro. Molecular Cancer (2015) doi:10.1186/s12943-014-0286-9

Tizioto C Polyana et al., Detection of quantitative trait loci for mineral content of Nelore longissimus dorsi muscle. Genetics Selection Evolution (2015) doi:10.1186/s12711-014-0083-3

Oleński Kamil et al., Genome-wide association study for posthitis in the free-living population of European bison ( Bison bonasus. Biology Direct (2015) doi:10.1186/s13062-014-0033-6

Purfield C Deirdre et al., Genome-wide association study for calving performance using high-density genotypes in dairy and beef cattle. Genetics Selection Evolution (2015) doi:10.1186/s12711-015-0126-4

Sevillano A Claudia et al., Genome-wide association study using deregressed breeding values for cryptorchidism and scrotal/inguinal hernia in two pig lines. Genetics Selection Evolution (2015) doi:10.1186/s12711-015-0096-6