自我编辑者
Polly learns that octopuses can change their own nervous systems by editing RNA in real time.
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Keep it on your phone →第六天早上,琪亚拉煮了咖啡。她和波莉一起坐在水箱旁。
意大利面章鱼倒挂着。她的身体缓缓地脉动着,触手轻轻漂浮。
“我想再告诉你一件事,”琪亚拉说,“这是我所知道的关于章鱼最奇怪的事情。”
DNA是动物的长期计划,而RNA是工作的副本。
在大多数动物中,RNA与DNA相匹配。但在章鱼中,RNA不匹配。细胞在制造RNA时会重写其中的一部分。大多数编辑发生在神经系统中。
“为什么呢?”琪亚拉说,“这让章鱼能够改变它的神经系统。它可以根据水温或食物调整自己的大脑。”
意大利面章鱼漂浮着。她眼睛附近的皮肤变成了柔和的粉红色和棕色。
“每只章鱼都是略有不同的动物,”琪亚拉说,“DNA是一样的,但工作的机制是为那片水和食物新建的。”
波莉想到了自己的大脑。那是她的。她不希望它改变。但她喜欢知道像意大利面章鱼这样的动物存在。
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