A theoretical and experimental study on the changes in the crossing-over value, their causes and meaning

Front Matter....Pages N1-2
Introduction....Pages 3-5
The Effect of Temperature on Crossing-Over....Pages 6-9
The effect of X-rays and of radium on crossing-over....Pages 9-17
Crossing-over modifiers and other genetical changes in the crossing-over value....Pages 18-32
The effect of age on crossing-over....Pages 33-40
The effect of sex on crossing-over....Pages 41-54
Crossing-over between the X- and the Y-chromosome....Pages 54-58
Non-disjunction, polyploidy and related phenomena and their effect on crossing-over....Pages 58-64
Changes in the crossing-over value due to translocation and related phenomena....Pages 64-73
Technical methods for experiments with lebistes reticulatus....Pages 74-82
Experiments on crossing-over of the elongatus (El) and of the maculatus (Ma) factor between the X- and the Y-chromosome of lebistes reticulatus....Pages 83-91
The effect of centrifugation and of ultra violet light on crossing-over between black and vestigial in the second chromosome of drosophila melanogaster, with a comparison of the results from repulsion and from coupling back-crosses....Pages 91-106
Summary....Pages 107-109
Back Matter....Pages 110-116