什么是种?什么又是亚种、变种和品种?它们之间有什么区别?又有什么关系?这是一个使人很感兴趣的问题,同时也是应该明确的问题.要搞清楚这些基本概念,首先要从什么是种的问题谈起: 什么是种从很早的时候起,当人们观察自然现象的时候,就发现各种生命形态之间存在着虽是相对的,但也是完全明确的界线,那时的人们根据一些表面的观 What are the species? What are the subspecies, varieties and varieties? What is the difference between them? And what is the relationship? This is a very interesting question, but also should be clear. To figure out these basic concepts , We must start with the question of what kind of species we are talking about: What is a species From the very earliest time when people observe natural phenomena, they find that there are relative but completely definite Boundary, when people based on some superficial view