no population term should have a has_penetrance relation - CHECK FAILURE:  expected 0 but got 3
name	uniquename	cvterm_name	uniquename
  [null]	PomBase-genotype-114	decreased vegetative cell population growth [has_penetrance] high [has_severity] low	PMID:37164017
  [null]	PomBase-genotype-118	normal vegetative cell population growth [has_penetrance] high	PMID:37164017
  [null]	PomBase-genotype-118	decreased vegetative cell population growth [has_penetrance] high	PMID:37164017