. Contributions from the Laboratory of Plant Genetics. Studies of Teratological Phenomena. 65 Take, for example, the investigations of de Vries upon this anomaly, the results of which were partly responsible for his formulation of the conception of "eversporting characters". This investigator defines an eversporting race of plants as one in which the „character" under observation is inherited by all the individual progeny, but only expressed (somatically) in part of the individuals. In other words, some of the. Fig. 5. Fasciated rosette of Crepis biennis. (After de Vries.) proge
. Contributions from the Laboratory of Plant Genetics. Studies of Teratological Phenomena. 65 Take, for example, the investigations of de Vries upon this anomaly, the results of which were partly responsible for his formulation of the conception of "eversporting characters". This investigator defines an eversporting race of plants as one in which the „character" under observation is inherited by all the individual progeny, but only expressed (somatically) in part of the individuals. In other words, some of the. Fig. 5. Fasciated rosette of Crepis biennis. (After de Vries.) progeny possess the character fasciation and some do not. This per- centage could be and was increased by selection in a plus direction, but the permanency of the increase was always subject to the caprice of the environment. Even in a homozygous pure line, de Yries looks upon this anomaly as inconstant, although its transmission to all the progeny is said to be perfect. In some of de Vries' cultures, this character was so inconstant that often over half the individuals of one of these races were normal, although the race was held to bre edtrue Induktive Abstammungs- und Vererbungslehre. XVI. 5. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bussey Institution. Boston : [s. n. ]
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