The formulator of this theory created namesake “two-parameter” and “three-parameter” distances compatible with it. So long as “the absolute value of 2 N sub E times s” is less than 1, this theory holds for things that don’t “strictly” have its namesake property. This theory replaced a “balance hypothesis” based on overdominance in order to explain a dilemma that intensity is only 1 per 300 generations. Using a “fixed model,” (15[1])Tomoko Ohta developed (15[1])a (*) “nearly” modification of this theory. In this theory, the genetic fixation probability equals 1 over 2 times the population size, and the mutant substitution rate equals the gamete mutation rate, thus explaining the constancy of the “molecular clock.” For 10 points, name this theory (10[1])formulated by Motoo Kimura, which posits that most allele changes occur due to genetic drift and that most molecular evolution causes no change to fitness. ■END■