By Jacobes Johannes Schuurman (auth.)

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The heterozygous melanistic mosaic-eyed individuals were bred together. Therefore homozygous melanistic mosaic-eyed beetles might theoretically also be expected in the progeny. The result, however, was different, like demonstrated by table I 0. 305 OF TENEBRIO MOLITOR L. T ABLE 10. 'i! Ö'Ö' total 18 I I I 48 I dark brown red mosaic 21 22 14 11 43 I 25 I red 9 5 I 14 From this it appears that not a single homozygous melanistic mosaic-eyed individual has arisen in a total of 148 individuals. The number of homozygous melanistic individuals found, viz.

J. SCHUURMAN, GONTRIBUTIONS 318 TO THE GENETICS Breeding tagether red-eyed F 1 individuals has, as was expected, yielded a great excess of red-eyed progeny, table 32. T ABLE 32. '? 51% mosaic-eyed. The crosses between mosaic-eyed

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