Answer: identicaltwins

AnswerCrossword Clue
IDENTICALTWINSThey come from a single ovum
IDENTICALTWINSMatched pair
IDENTICALTWINSMetropolitan Stadium siblings?
IDENTICALTWINSTweedledum and Tweedledee
IDENTICALTWINSFamily pair who are hard to tell apart
IDENTICALTWINSRingers
IDENTICALTWINSHumphrey Metrodome clones
IDENTICALTWINSTiki and Ronde Barber, e.g.