Berlin lies between london , rega and vienna .

柏林位于伦敦、里加和维也纳之间。

The gene that stops the body cells of volvox reproducing is called rega .

阻止团藻体细胞分化的基因叫做rega。

By searching for genetic sequences similar to rega in the burgeoning databases of genes that now exist , they found one in a unicellular alga called chlamydomonas reinhardtii .

在搜索了不断扩充的数据库中海量的基因之后，他们在一种单细胞藻类衣藻chlamydomonasreinhardtii中发现了一段和rega类似的基因序列。