biological relationship meaning in English

生物性关系

And being biologically minded as the chinese are , they naturally think of a man ' s biological relationships first
中国人既然是具有生物学的思想，自然先想到一个人的生物学上的关系。
The branch of ecology that deals with the biological relationship between an individual organism or an individual species and its environment
个体生态学生态学的一个分支，主要研究个体有机体之间或某一个体种族同其环境之间的生物学关系