In experiments，an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs，but an injection from sinistral eggs does not influence dextral eggs.
In experiments，an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs，but an injection from sinistral eggs does not influence dextral eggs.
在实验中，用取自右旋卵子的细胞质进行的注射，可改变左旋卵子的模式；用取自左旋卵子的细胞质进行的注射却不能影响到右旋卵子。