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Evidence for Selection Against Heterozygotes: Post-Settlement Excess of Allozyme Homozygosity in a Cohort of the Chilean Oyster, Ostrea chilensis Philippi, 1845

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Reports of heterozygote deficiencies in electrophoretic surveys carried out in marine bivalves abound in the literature (1-6) but the mechanism or mechanisms producing this phenomenon have not been well defined. We report that, in the Chilean oyster (Ostrea ch... ...