Christoph CgThumala MiJ NazerL ArmanetL Cifuentes2026-03-222026-03-221998https://pubmed.ncbi.nlm.nih.gov/9629751https://andeanlibrary.org/handle/123456789/64524Heterozygous mothers for these genetic systems have a reproductive disadvantage.enLoss of heterozygosityOffspringABO blood group systemBiologyPregnancyHeterozygote advantageGenetics[Association between maternal heterozygosity for five blood groups and reproductive success].article