A daughter DNA molecule is composed of one original strand and one new strand because DNA replication is __________ .

Hi, everyone. Welcome back. Let's look at our next question. Blank refers to a mode of DNA replication where each resulting molecule has both an old parental and a new daughter component. A conservative application B, semi dispersive replication, C, semiconservative application or D non conservative replication. So let's think about where the material comes from in the new daughter strands after DNA replication. So in blue here, I'll draw two lines representing the parent DNA, parent DNA and those two strands of course, are complementary each other to each other. So I'll draw five prime to three prime direction on the top and three prime to five prime direction on the bottom. And in replication, we recall that these split apart and each acts as the template for a new daughter strand. So on the top, I'll draw that five prime to three prime and that's her parent template, parent template. And then we'll act as the template for the new strand on the bottom. We've got that three prime to five prime parent template. So then each daughter molecule now has its second strand that was synthesized and is complementary to the parent strands on the top. I've drawn red, three prime to five prime, a new daughter strand. And on the bottom, we'll draw a five prime to three prime top line. And that will be the new daughter strand. So you can see in the two daughter molecules, each of them gets half of its material from the parent molecule and half of its material is new. When we think of the most basic meaning of the word conservative to conserve something or to save something. This is cc semi conservative replication because you've conserved half of the old strand and then added half new material. So conservative application choice a would mean you just had all the original parent material in one molecule, semi dispersive is just the wrong term. And then choice d non conservative replication, you just have a completely new um daughter molecule. But in this case, again, the daughter molecules are half and half old and new material. So this mode of DNA replication is choice c semiconservative replication. See you in the next video.