Assertion: chromosome's gene | /r/HasProperty | essential
Facets:
value: for normal development
type: PURPOSE
value: for function
type: PURPOSE
Source sentences:
text: Many genes in the pseudoautosomal regions are essential for normal development.
text: By adding a molecule called a methyl group to histones, histone methyltransferases can turn off (suppress) the activity of certain genes, which is essential for normal development and function.