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Updated: June 16, 2025
But the enthusiasm with which this applied result of Mendel's Law was at first hailed by biologists has gradually subsided; for it has been found that though these new forms will breed true under certain conditions, they are nevertheless cross-fertile with the original forms, and thus the circle can be completed back again by a return to the parent form, from which the new "species" can again be produced at will with the same mathematical exactness as before.
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