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n2:RO_0002504

rdf:type

owl:AnnotationProperty

rdfs:subPropertyOf

n2:RO_0002175

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always present in taxon

n2:IAO_0000112

forelimb always_present_in_taxon Euarchontoglires brain always_present_in_taxon 'Vertebrata'

n2:IAO_0000115

S always_present_in_taxon T if every fully formed member of taxon T has part some S, or is an instance of S

n2:IAO_0000116

This is a very strong relation. Often we will not have enough evidence to know for sure that there are no species within a lineage that lack the structure - loss is common in evolution. However, there are some statements we can make with confidence - no vertebrate lineage could persist without a brain or a heart. All primates are limbed.

n2:IAO_0000118

never lost in