The first principles of heredity; with 75 illustrations and diagrms . imal and one ofthe much smaller progeny, which has resulted from re- 3 iS THE FIRST PRINCIPLES OF HEREDITY peated divisions (see Fig. 4, c); in the Alga Zanardiniathe two conjugating cells are already of widely divergentcharacter, approaching in type the bulky female and minuteactive male germ. Further, that conjugation means more than mere fusionand consequent separation of the cell-substance of the twomdividuals concerned can be seen in those cases where, as in the Infusorian6 Par am a ec ium cau da- tum, an exchange ofnuc
The first principles of heredity; with 75 illustrations and diagrms . imal and one ofthe much smaller progeny, which has resulted from re- 3 iS THE FIRST PRINCIPLES OF HEREDITY peated divisions (see Fig. 4, c); in the Alga Zanardiniathe two conjugating cells are already of widely divergentcharacter, approaching in type the bulky female and minuteactive male germ. Further, that conjugation means more than mere fusionand consequent separation of the cell-substance of the twomdividuals concerned can be seen in those cases where, as in the Infusorian6 Par am a ec ium cau da- tum, an exchange ofnuclei can be clearlydemonstrated betweenthe two conjugatinganimals. The twobodies, after closelyapproximating to eachother, send each anucleus across to theother. Evidently thepurpose of conjugationseems to be the mix-ture and exchange ofthe qualities of the twoparents and their re-distribution among the offspring. We can, therefore,regard this process as the last link leading up to realAmphimixis—, the mixing of parental qualities forthe production of
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1910
