What process will occur if an error is made during DNA replication, resulting in a slight change to the structure of a gene?

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.