Hi All,

When working with the GO.db package we ran into a seeming inconsistency in the 
GOBPOFFSPRING object. It seems there that a term's offspring may have offspring 
that is not offspring of the term itself. This seems inconsistent with the DAG 
structure of gene ontology.

> library(GO.db)
> xx <- as.list(GOBPOFFSPRING)
> setapt <- xx$"GO:0006915" #apoptosis
> subsetapt <- xx$"GO:0042981" #offspring of apoptosis
> "GO:0042981"%in%setapt
[1] TRUE
> all(subsetapt %in% setapt)
[1] FALSE

Is there something wrong or are we misunderstanding the GOBPOFFSPRING object?

Best wishes,

Jelle
Het Radboudumc staat geregistreerd bij de Kamer van Koophandel in het 
handelsregister onder nummer 41055629.
The Radboud university medical center is listed in the Commercial Register of 
the Chamber of Commerce under file number 41055629.

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