Abstract：
In this issue of Molecular Ecology, Mora-Carrera et al. (2022) revisit a case of the loss of an outcrossing system in primroses, which has been studied as an example of balancing selection in the wild since the 1940s. Molecular variants in the gene involved in the mutant self-fertile phenotype, which is now known, help towards understanding this textbook example of breakdown of an outcrossing system. However, as often happens, new information also raises further questions.
摘要：
在本期的分子生态学中,Mora-Carrera等人.(2022)重新审视一起报春花中的外跨系统丢失的案例，自20世纪40年代以来，一直被研究为在野外平衡选择的一个例子。涉及突变自育表型的基因中的分子变异，现在众所周知，帮助理解这个教科书中关于交叉系统崩溃的例子。然而,正如经常发生的那样，新的信息也提出了进一步的问题。
