3. Results
3.1. Red color
Each of 13 crosses involving Kohaku parents resulted in progeny having three phenotypes: transparent (colorless), Kohaku and red (i.e. completely red), with average proportions of 44.9%, 38.4% and 16.7%, respectively. However, the proportions of these three phenotypes were highly variable among crosses (Table 2). For instance, the proportion of Kohaku offspring ranged from 10.6% to 67.6%. Pairwise mating between all combinations of transparent, Kohaku and red phenotypes resulted in progeny having only these three phenotypes. Furthermore, all three phenotypes were found in all types of crosses (Fig. 2), except for crosses between red parents, which resulted in red progeny only. On average, the proportion of transparent offspring decreased as the coverage of red color in the parents increased. For example, three crosses between transparent parents and five between red and Kohaku parents resulted in an average of 51.9% and 7.6% transparent offspring, respectively (Fig. 2). The average proportion of Kohaku