英语语法分析

The gene that stops the body cells of Volvox reproducing is called regA.

阻止团藻的体细胞生殖的基因叫regA。

Apparently, a mutation in this gene-or, more probably, in the control system that activates it-gave rise to Volvox.

显然这个基因的突变，或更可能是激活这个基因的控制机制的突变产生了团藻。

Colony a body form in which many cells with similar form and function are grouped together, as in many algae, e. g. Volvox.

由相同类型和功能的细胞组成的生物体，在许多藻类中存在，例如团藻。