If you are using an assembly supported by Partek (e.g. human), a gene set from geneontology.org will appear in the Add gene set drop-down list (Figure 1). Select the Download gene set radio button and click Create.
![Flow Documentation > Adding a Gene Set > Screenshot 2023-09-29 at 16.50.38.png](/download/attachments/8323348/Screenshot%202023-09-29%20at%2016.50.38.png?version=1&modificationDate=1696002681966&api=v2)
Figure 1. For many model organisms, automatic downloads of gene sets are available from the Partek repository (source: http://geneontology.org/)
If you prefer to add a custom gene set, or if you are working with a custom assembly, choose
Add gene ontology source from the Add gene set drop-down list (Figure 2). Name the gene set by typing into the Custom Name box and click
Create. Characters such as $ * | \ : " < > ? / % cannot be used in custom names. A gene set file can be added from the
Partek Flow Server or a
URL download link. The behavior of each option is similar to when importing a reference sequence (see
Adding a Reference Sequence). When browsing for files on the Partek Flow server, only the files with relevant file extensions will be visible (.gmt and various compressed formats).
![Flow Documentation > Adding a Gene Set > Screenshot 2023-09-29 at 16.50.58.png](/download/attachments/8323348/Screenshot%202023-09-29%20at%2016.50.58.png?version=1&modificationDate=1696002700210&api=v2)
Figure 2. Adding a custom gene set
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