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The evolution of the North American oenotheras of the “biennis” group
As one proceeds from west to east across North America, he finds that the Oenotheras of the subgenus Euoenothera (the "biennis group") show a progressive change in cytogenetic and reproductiveExpand
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HUGO DE VRIES 1848—1935
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Cytological Study of Meiosis in Anthers of Oenothera muricata
1. Early stages in the heterotypic prophase in every way resemble those found in previously described species. They give evidence of the presence of telosynapsis as opposed to parasynapsis. 2. TheExpand
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Interaction between Complexes as Evidence for Segmental Interchange in Oenothera.
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New Evidence Bearing Upon the Problem of the Cytological Basis for Genetical Peculiarities in the Oenotheras
THIS is a preliminary report of a joint cytological and genetical study of a number of species and specieshybrids of Oenothera, which was made in the hope of obtaining experimental evidence upon theExpand
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Meiosis in the Pollen Mother Cells of OENOTHERA BIENNIS and OENOTHERA BIENNIS SULFUREA.
Page 131, for "Plate 1" read "Plate 2." Page 137, for "Plate 2" read "Plate 1." Page 154, line 24, for " 'chromosome exchange' "read "interchromosomal crossing over or 'chromosome exchange'." PageExpand
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Is wall‐bound calcium redistributed during the gravireaction of stems and coleoptiles?
We have tested the hypothesis that wall-bound calcium is redistributed from the lower to the upper sides of horizontal stems and coleoptiles during the reaction phase of gravicurvature. We usedExpand
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A Contribution to an Understanding of Crossing over within Chromosome Rings of Oenothera.
There are two theories to account for linkage phenomena as observed in Oenothera. (1) Linked genes are always found within the same chromosome, that is, linkage is of the conventional or DrosophilaExpand
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