chromosome_part Watson_strand Added as per GitHub Issue Request #419 (https://github.com/The-Sequence-Ontology/SO-Ontologies/issues/419) SO:0002262 An absolute reference to the strand. When a chromosome has p and q arms, the Watson strand is the strand whose 5'-end is on the short arm of the chromosome. Of note, the term 'plus strand' is typically based on a reference sequence where it's preferred for the plus strand to be the Watson strand, but might not be and 'plus strand' is therefore not an exact synonym. 2020-05-28T10:33:30Z Plus strand Watson strand Forward strand david sequence Top strand