Complex sentence: Such mutant flies have the property that, when the fly is brought from its normal 22 ° C to 30 ° C, the dynamin function is lost: however, when the flies are cooled to 22 ° C, it is regained.
Split into simpler sentences: Such mutant flies have the property that, when the fly is brought from its normal 22 ° C to 30 ° C, the dynamin function is lost. However, when the flies are cooled to 22 ° C, it is regained.