recombination cross-section

The results suggest that positive OPPs may be a kind of alkylating agent, mainly methylated the N-7 position of guanine and induced base pair substitution of formed adduct, and cross linkage to induce DNA recombination and mutation.

推测阳性有机磷农药作为烷化剂，主要是使鸟嘌呤的N－7位甲基化，引起碱基置换；或形成加合物，造成交联，从而引发DNA重组修复而致突变。

Scientists know that homologous recombination repair is also required for the repair of DNA cross-links, but the exact details remain to be resolved, Chen said.

科学家知道，DNA交联修复过程中也需要同源生物再结合修复参与，但是精确的细节仍有待研究。

Plant somatic hybridization provides the possibility of genetic material recombination of sexual cross-incompatibility plants, results in novel plant cultivars and even new species. It is a preponderant technique, especially for improving agronomic traits controlled by multiple genes.

植物体细胞杂交使远缘杂交不亲和的植物有可能实现遗传物质重组，创造和培养植物新品种乃至新物种，尤其在多基因控制农艺性状的改良上具有较大优势。