A team of researchers including Dr David S Richardson (BIO) have been studying the paternity of offspring of a seemingly monogamous species, the Seychelles warbler. DNA reveals infidelity among females paired with males that show relatively low genetic diversity.
Offspring of such female infidelity show a higher genetic diversity of crucial disease-detecting genes, known as the major histocompatibility complex (MHC), than would have been the case had females mated with their regular partner.
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