00:01
Hi there.
00:02
This question is about gel electrophoresis.
00:10
In gel electrophoresis, fragments are separated by loading them into a gel and then passing an electric current through them.
00:22
The electric current will be carried through the gel and will carry the fragments along with it.
00:28
So to answer this question, let's talk about another type of current for a minute.
00:33
Let's just talk about a river.
00:36
So we have a river here.
00:37
It has a current.
00:40
And let's say, that at one point here in the river, we drop in three different sizes of rocks.
00:50
So we throw in three different types of stones.
00:52
We throw in some big stones.
00:55
We throw in some medium size, and we throw in some tiny pebbles.
01:03
All right.
01:04
So let's think about this for a minute.
01:06
If the same amount of time elapses and they're all being, they're all being affected by the same current in the river, let's think about what would happen after a bit of time.
01:16
After an equal amount of time, the tiniest fragments are going to travel the furthest in that current.
01:23
The medium -sized ones will travel away, but not as far as the tiny ones...