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Install the ClustalW. (v21/v20)

1. Please download the file from here.

2. Double-click the downloaded to generate the clustalw-2.1-macosx folder.

3. Select [File]→[Parallel Editor].

4. Click the [Import Sequence] button and read sequence files.

5. Click the [ClustalW] button.

6. Set the path of the ClustalW you just unpacked to 'Select ClustalW' in the ClustalW Parameter

7. If you want to use the ClustalW2 , select the 'clustalw2'.