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| | HYBRIDISM - Online Information article about HYBRIDISM |
 | | In addition to differences of habit, temperament, time of maturity, and so forth, gross structural differences may make mating impossible. |
 | | Thus Escherick contends that among insects the peculiar structure of the genital appendages makes cross-impregnation impossible, and there is reason to believe that the specific peculiarities of the modified sexual palps in male spiders have a similar result. |
 | | The difficulties, however, may not exist, or may be overcome by experiment, and frequently it is only careful management that is required to produce crossing. |
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