Table 3.

Examples of original and intermediate drafts versus final hypotheses

Draft	Hypothesis
Original A	“If, the drug colchicine inhibits the microtubule polymerization then, by discontinuing colchicine administration will reverse these effects which will then reestablish the microtubule polymerization translation sequence for protein that make flagella.”
Final A	“If the effects of colchicine are reversible then, by washing away the drug should allow microtubule polymerization to be reestablished.”
Original B	“If cold temperature is related to flagellar growth then a decrease in temperature will decrease the growth of flagella.”
Final B	“If flagellar growth is dependent on temperature then a decrease in temperature will decrease the growth of flagella.”
Original C	“If actinomycin D is applied to the flagella of Chlamydomonas reinhardtii then their growth will be inhibited.”
Second C	“If actinomycin D inhibits transcription during protein synthesis then the synthesis of new alpha and beta tubulin subunits will be smaller than those not exposed to actinomycin D.”
Final C	“If transcription is necessary for flagellar regrowth then the presence of actinomycin D should prevent flagellar regeneration.”

Student hypotheses are reproduced verbatim, including any spelling or other errors.