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Marshall, D., Abbott, R. On the frequency of introgression of the radiate (Tr) allele from Senecio squalidus L. into Senecio vulgaris L.. Heredity 45, 133–135 (1980). https://doi.org/10.1038/hdy.1980.57
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DOI: https://doi.org/10.1038/hdy.1980.57
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