Regarding the constantly growing number of users and the limited space on our server, results will not be conserved for more than one week.
We apologize for the inconvenience.

Gblocks 0.91b (doc)

Upload your alignment (FASTA, Phylip, Clustal, EMBL or NEXUS format) from a file:

Or paste it here (load an example of alignment)


For a less stringent selection:
Allow smaller final blocks
Allow gap positions within the final blocks
Allow less strict flanking positions
For a more stringent selection:
Do not allow many contiguous nonconserved positions

Valid XHTML 1.0 Transitional