亲代的连锁基因在第一次减数分裂时，其同源染色单体间的某些片段可能会发生交换与重组，这些新组合的基因组在第二次减数分裂时进入生殖细胞并能传给子代，从而使子代出现重组体。这种现象在对单个孩子作亲子鉴定时几乎均被忽视，但在对双生子或多个孩子进行亲子鉴定时，有时会有所显现。本文对这一情况进行讨论，以期能引起必要的重视 At the first meiosis, the parental linkage gene may exchange and recombine certain segments of its homologous chromatids, and the genomes of these new combinations enter the germ cells at the second meiotic division Give offspring, so that offspring appear recombinant. This phenomenon is almost neglected when making paternity tests on a single child, but sometimes appears when paternity tests are performed on twins or multiple children. This article discusses this situation with a view to drawing the necessary attention