Summary
Female R. fuscipes [in the laboratory] were observed to transmit B chromosomes to their offspring at a frequency greater than expected. In two natural populations described here, this accumulation of Bs appears to be countered by strong selection against B carrying rats which is apparent from the disproportionate loss of +B individuals from the population before the breeding season.
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Thomson, R. B chromosomes in Rattus fuscipes II. The transmission of B chromosomes to offspring and population studies: support for the “parasitic” model. Heredity 52, 363–372 (1984). https://doi.org/10.1038/hdy.1984.44
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DOI: https://doi.org/10.1038/hdy.1984.44
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