00:01
Okay, i want to answer this question.
00:01
Let's talk about base pairing goals.
00:04
Remember that according to base pairing goals, adenine is going to pair with thymine and cytosine with one.
00:08
So if a double -stranded dna molecule, whenever you find an adenine, you're going to find a thymine.
00:14
And whenever you find a thymine, you're going to have an adeline.
00:17
And the same for cytosine and one.
00:19
So particularly, the amounts of adeline are going to be the same as the amounts of timing, and the amounts of cytosine are going to be the same as the amounts of one.
00:27
Okay.
00:28
Also remember that adenine and warning are purins and cytocin and timing are pyrimidins.
00:34
So, you can also say that, you can also say that adenine or the amounts of adenine plus the amounts of cytosine are the same as the amount of timing.
00:47
Well, because the amounts of adenine are the same as the amount of timing.
00:52
And the amounts of cytosin is the same as the amount of oneing.
00:55
So practically this is like c plus a.
00:58
So this is going to be the same as this.
00:59
Okay? this question says dna is isolated from a deep frozen netherthal corpse exposed in the swiss alps due to global warming.
01:10
It has 12 % one in basis.
01:13
So you have 12 % for one in.
01:16
What percentage that's noplodize in this sample will be adding? okay.
01:19
So as you have 12 % one in, then it means that they're going to have 12 % of cytosine also.
01:27
Now, together you have 24%.
01:30
And the total should be 100%.
01:34
So what is the remaining number that is missing here? it is 76.
01:39
You have a missing 76 % because 76 % plus 24 % is 100%.
01:44
And this 24 % is for both wanting and cytosate together.
01:49
Okay, so you have a remaining of 76%.
01:52
So this 76 % should include addinging plus timing.
01:57
Okay, but as remember that the amounts of adenine and time are the same thing.
02:01
It means that this is like x and this is like x.
02:04
So you have 2x is equal to 76.
02:06
You divide both sides by 2.
02:08
You're going to create that a 38 % is going to be for adenine and 38 % is going to be also for the time.
02:18
So the answer for this question is going to be option d that is 38.
02:22
Then it says during transcription, which rna molecule will be made from the dna sequence, a g, no, sorry, c -g, t -t -a -c -g.
02:34
This is our dna.
02:36
And they're asking us to find the m -n -a sequence...