The word cytogeneticist is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 25
Highest Scoring Words With Friends™ Play In The Letters cytogeneticist
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Seven Letter Word Alert: (38 words)
cenotes, coesite, cogency, cognise, conceit, concise, congest, contest, costing, cygnets, cystine, egotist, enocyte, entices, eosinic, genetic, gnostic, iconist, ignites, incites, inocyte, inosite, neocyte, notices, octenes, octynes, science, section, setting, siccing, sitting, society, syenite, testing, tictocs, tiniest, tonette, yoginis