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Review
. 2007 Feb;19(2):395-402.
doi: 10.1105/tpc.106.049338. Epub 2007 Feb 9.

The gene balance hypothesis: from classical genetics to modern genomics

James A Birchler  1 , Reiner A Veitia
Affiliations
Review

The gene balance hypothesis: from classical genetics to modern genomics

James A Birchler et al. Plant Cell. 2007 Feb.
No abstract available

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Figures

Figure 1.
Figure 1.
Chromosomal Imbalance. Diagrammatic representation of chromosome variations with the varied chromosome shown in enlarged form. Full or partial monosomics with only one copy of a chromosome or chromosomal segment are usually more severely affected than haploid plants. Trisomic plants with an extra chromosome often show a greater morphological change from the diploid than observed in polyploid plants, such as tetraploids. Secondary trisomics carrying an isochromosome composed of two copies of a chromosome arm show enhanced phenotypic changes for some characteristics typical of the corresponding primary trisomic. When an isochromosome is recovered in an otherwise haploid plant, the imbalance is most severe and results in highly defective plants (Satina et al., 1937). These relationships led to the concept of genetic balance.
See this image and copyright information in PMC

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