run in the family idiom       
 家族遗传,世代相传
If a quality, ability, disease, etc. runs in the family, many members of the family have it.
  Intelligence seems to run in that family. 那一家人都很聪明,好像是遗传的。 
 We're all ambitious - it seems to run in the family. 我们一家人都很有抱负——好像是遗传。