introgression hybridization

例句：

1. 1. The introgression of different breeds has improved the quality of the cattle.
   不同品种的混血已经提高了牛的质量。
2. 2. Introgression is a natural process that occurs when two species interbreed.
   混血是两个物种自然发生的杂交过程。
3. 3.The introgression of genes from one species into another is a common occurrence in nature.
   一个物种的基因从另一个物种中引入是一种常见的自然现象。