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Schematic Depiction of Two Types of Balanced Lethal Factors in Oenothera



On the left: Lethal factors located in the gametes of Oenothera muricata. The rigens complex is inviable due to a lethal factor within the pollen. The curvans complex is incapable of producing functional ovules.

On the right: Zygotic lethal factors in Oenothera lamarckiana. The homozgotes velans x velans and gaudens x gaudens are not viable. Depicted are the genotypes of the F1 and the F2 generation. (R. E. CLELAND, 1935).




© Peter v. Sengbusch - b-online@botanik.uni-hamburg.de