Abstract
Using data from the in situ hybridisation of the giant chromosomes from salivary glands, we have estimated the chromosomal distribution of copia, mdg-1 (a copia-like element), I and P (two elements involved in hybrid dysgenesis systems) in hybrids from a 6 × 6 diallel cross between highly inbred lines of Drosophila melanogaster. The larvo-pupal viability of the hybrids was found to be significantly correlated with the maternal copy number of the I and P elements. Hybrid viability can thus be predicted from the copy number of certain elements in the maternal inbred lines, and not from the degree of heterozygosity of the hybrid genomes.
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Biémont, C., Aouar, A., Gautier, C. et al. Hybrid viability is correlated with the I and P mobile element copy numbers of the maternal inbred line in Drosophila melanogaster. Heredity 62, 301–305 (1989). https://doi.org/10.1038/hdy.1989.43
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DOI: https://doi.org/10.1038/hdy.1989.43
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