Reading Metacello methods to understand dependencies requires you and your team understand the API.
You may use the package dependencies: http://permalink.gmane.org/gmane.comp.lang.smalltalk.pharo.devel/19656
( PDPackageAnalyzer onPackagesNamed: #(
'BioEntrez' 'BioEntrezTests'
'BioBlast' 'BioBlastTests'
'BioFormatters' 'BioFormatterTests'
'BioParsers' 'BioParsersTests'
'BioTools' 'BioToolsTests'
'BioSupport'
'BioWrappers'�� 'BioWrapperTests'
'BioNCBI' 'BioNCBITests'
'BioSupport'
'BioPharo'
'BioClassifier' 'BioClassifierTests'
'BioArlequin'
'BioToolsSamples' ) )
save: 'BioSmalltalk.dot'
and load the .dot in GraphViz.