The evolution theory . FiG. 123. Conjugation of Coccicliimi j^roprium, a cellular parasite of thenewt {Triton), after Siedlecki. A, a microgamete {Ml) in the act of penetrat-ing the shell of a macrogamete (Ma) through the micropyle. B, the male andthe female nuclear constituents are uniting <j c7ir and 9cJirj. of the ids of two unicellulars will make harmonious and many-side«ladaptation materially easier. It will thus give an advantage in thestruggle for existence, and we may therefore expect to find that thenuclear substance in all unicellular organism is made up of ids. The observations h
The evolution theory . FiG. 123. Conjugation of Coccicliimi j^roprium, a cellular parasite of thenewt {Triton), after Siedlecki. A, a microgamete {Ml) in the act of penetrat-ing the shell of a macrogamete (Ma) through the micropyle. B, the male andthe female nuclear constituents are uniting <j c7ir and 9cJirj. of the ids of two unicellulars will make harmonious and many-side«ladaptation materially easier. It will thus give an advantage in thestruggle for existence, and we may therefore expect to find that thenuclear substance in all unicellular organism is made up of ids. The observations hitherto made do not, however, appear to bearthis out. for in the lower Flao-ellata and Alo-?e the nuclear sub-stance does indeed consist of chromatin, but—as far as it can be madeout—of a compact unarranged mass of it. But even though deeperinvestigations should succeed in demonstrating chromosomes in manyof these, the nucleus mitbt have arisen at some time, and we mustassume that it did so through a more intimate
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Keywords: ., bookauthorthomsonj, bookcentury1900, bookdecade1900, bookyear1904
