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This tutorial builds on the alignment tutorial, if you have not already, please first run that tutorial: [[SeqShop:_Sequence_Mapping_and_Assembly_Practical|Alignment Tutorial]]
Per sample BAM files contain sequence reads that are mapped to positions in the genome.
For a reminder on how to look at/read BAM files, see: [[SeqShop:_Sequence_Mapping_and_Assembly_Practical#BAM_Files|SeqShop Aligment: BAM Files]]
For this tutorial, we will use the 4 BAMs produced in the [[SeqShop: Sequence Mapping and Assembly Practical, June 2014]] as well as with 58 BAMs that were pre-aligned to that 1MB region of chromosome 22.
Let's take a look at that interesting location we found in the [[SeqShop:_Sequence_Mapping_and_Assembly_Practical#Accessing_BAMs_by_Position|alignment tutorial]] : chromosome 22, positions 36907000-36907100
Use tabix to extract that from the VCFs: