00:01
Hello, so in this video we're going to be talking about dna replication.
00:06
So we're going to be going through all of these answer choices and really figuring out what could be false about them.
00:14
And then we're going to eliminate anything that sounds like it might be false.
00:19
So we'll find the one true answer.
00:23
Okay, so let's start with answer choice a.
00:26
So a says during leading strand synthesis, dna polymer synthesizes short discontinuous strands of dna.
00:36
So it is true that dna is true that dna polymerase synthesizes short discontinuous strands of dna.
01:00
However it is continuous in the leading strand and discontinuous in the lagging strand.
01:19
So because of this, a has to be false.
01:25
So a has to be.
01:30
So we can eliminate a since it says discontinuous in the leading strand.
01:37
So let's go on to b.
01:47
So b says during lagging strand synthesis, legase joins together multiple okosaki fragments.
01:55
So just from first reading this, it sounds pretty good.
02:00
So it is true that okosaki fragments are short pieces that result from the double helix unwinding.
02:20
It's correct that ligase creates a longer strand by pacing the okasaki fragments together.
02:44
So b sounds true...