Heterozygosity, Environmental Variation and Heterosis

@article{Robertson1952HeterozygosityEV,
  title={Heterozygosity, Environmental Variation and Heterosis},
  author={Forbes W. Robertson and E. C. R. Reeve},
  journal={Nature},
  year={1952},
  volume={170},
  pages={286-286}
}
WHEN a wild strain of Drosophila melanogaster is inbred under optimum conditions, the phenotypic variance of body-size is reduced by not much more than 50 per cent1. This suggests that nearly half the variance of the original strain was due to the effects of uncontrollable environmental variations within the culture. But highly inbred lines tend to have a much higher variance than crosses between them, so that the environmental variance in such quantitative characters is not constant for all… CONTINUE READING

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