现在很清楚,杂种形成的种子具有两个分化性状中的一个或另一个,其中一半再次发育成杂种形式,而另一半产生保持恒定并以相等数量接收显性或隐性性状的植物。
Don't be embarrassed by your failures, learn from them and start again.
Education is a lamp, but too many never find the switch.
When we damage our woodlands, we're not losing trees—we're erasing chapters of Earth's story.
The only thing worse than being talked about is not being talked about.