Dna is related to Blood. Blood is related to Royal. Royal is related to People. 
Peer is related to Equal. Equal is related to Balance. Balance is a synonym of Proportion. 
Dna <--RelatedTo--> Blood <--RelatedTo--> Royal <--RelatedTo--> People 
Peer <--RelatedTo--> Equal <--RelatedTo--> Balance <--Synonym--> Proportion 