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以遗传竞争观点来看母儿间的关系,可以把妊娠现象解释为母儿间、兄弟间对胚胎发生的营养资源的争夺。母亲流产可避免继续妊娠给自身带来的危险,并确保自己和以后妊娠的子代的健康;但胎儿
From the perspective of genetic competition, the relationship between mother and child can be interpreted as a contention between mothers and children and between brothers in the nutrient resources that occur in the embryo. Miscarriage of the mother avoids the danger posed to her by continuing her pregnancy and ensures the health of her and her future pregnancies; however, the fetus