評論
打印
Mutation
突變
Do you know about mutations?
你知道突變嗎？
A mutation happens when the DNA structure in a gene changes.
當基因的DNA結構發生變化時就會發生突變。
Once a mutation happens, the change can't be reversed.
突變一旦發生，改變就無法逆轉。
Is this difficult for you to understand?
你很難理解是嗎？
Imagine that there is a machine, the machine gives orders to other machines.
想象有一臺機器向其他機器發指令。
According to the orders, other machines make a car.
根據指令，其他機器制造一輛汽車。
If the orders change, they will make a different type of car.
如果指令變了，它們會造出一輛不同類型的汽車。
A mutation is like an incorrect order.
突變就像錯誤的指令，
Many people and animals are born with diseases or physical difficulties because of mutations.
許多人和動物因為突變，出生時就有疾病或生理缺陷。
Are mutations always bad?
突變都不好嗎？
No, evolution is kind of mutation.
不是，進化也是一種突變。
