In one technique, fractions of this property called Manders’ coefficients are calculated after Costes’ randomization method quantifies the background threshold value by repeatedly recalculating Pearson’s correlation coefficient. One mutant with this property has a histidine substitution at the tyrosine-66 position. Linkers like R·S·I·A·T tether protein fragments in a bimolecular technique named for this property. Both (*) Cy3 (10[1])and Cy5 exhibit this property in a technique (10[1])named for Förster. Colocalization determines co-occurrence of proteins by examining the spatial overlap of this property, which can be produced by reporter genes like tdTomato and mCherry. (10[1])In flow cytometry, lasers activate cells labeled with markers (-5[1])that exhibit this phenomenon, its namesake “phores.” For 10 points, name this phenomenon exhibited by luciferase and GFP. ■END■ (10[2])