Gap Track Settings
Gap Locations   (All Mapping and Sequencing Tracks)

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This track shows the gaps in the Aug. 2014 D. melanogaster genome assembly.

Genome assembly procedures are covered in the NCBI assembly documentation.
NCBI also provides specific information about this assembly.

The definition of the gaps in this assembly is from the AGP file delivered with the sequence. The NCBI document AGP Specification describes the format of the AGP file.

Gaps are represented as black boxes in this track. If the relative order and orientation of the contigs on either side of the gap is supported by read pair data, it is a bridged gap and a white line is drawn through the black box representing the gap.

This assembly contains the following principal types of gaps:

  • other - gaps added at UCSC to annotate strings of Ns that were not marked in the AGP file (count: 572; size range: 10 - 53,860 bases)