Qualifier
linkage_evidence
Definition type of evidence establishing linkage across an assembly_gap. Only allowed to be used with assembly_gap features that have a /gap_type value of "within scaffold", "repeat within scaffold" or "contamination"; Please note if /gap-type="contamination", /linkage_evidence must be used and the value of /linkage_evidence must be "unspecified".
Value Format
"pcr", "paired-ends", "align genus", "align xgenus", "align trnscpt", "within clone", 
"clone contig", "map", "strobe", "proximity ligation", "unspecified"
Example /linkage_evidence="paired-ends"
/linkage_evidence="within clone"
Comment This qualifier is used only for assembly_gap features and its values are controlled by the AGP Specification version 2.1: https://www.ncbi.nlm.nih.gov/assembly/agp/AGP_Specification/ Please also visit: http://www.insdc.org/controlled-vocabulary-linkageevidence-qualifier