Answer: tetrads

AnswerCrossword Clue
TETRADSGroups of four
TETRADSThe Horsemen et al.
TETRADSThe Beatles and others
TETRADSBridge units
TETRADSFoursomes
TETRADSQuartets.
TETRADSDouble duos
TETRADSQuaternities
tetradsthe number four
tetradsTETRAD, a group of four
tetradstetravalent or quadrivalent element, atom, or group
tetradsgroup of four
tetradsgroup of four chromatids formed by synapsis at the beginning of meiosis