After S phase, what makes up a single chromosome?
a. Two daughter chromosomes
b. A double-stranded DNA molecule
c. Two single-stranded DNA molecules
d. Two sister chromatids

Question

After S phase, what makes up a single chromosome?

a. Two daughter chromosomes

b. A double-stranded DNA molecule

c. Two single-stranded DNA molecules

d. Two sister chromatids

Accepted Answer

Hi everyone, let's look at our next question. It says which of the following phases occurs between the G one phase and the G two phase. So let's just recall from our content videos are cell cycle and I'll just put up a little uh quartered circle here and this is something that's pretty good to have on hand uh in terms of in your memory um remember how to draw this. Um It's useful to keep things straight when you're trying to think this through. So quickly put here in this quadrant here, this would be mitosis up here and I'm just gonna shade it in a little remember that. That's sort of its own little its own little thing going on right there. And then when mitosis is not you don't have active dividing going on there, then you've got these other phases and you can just start after mitosis. You've got G1 S. G. Two and then we have out here our little G zero phase, the resting phase that cells can go in and out of. So just having that basic concept on hand can help you keep things straight. So we've got our handy little diagram to consult here and we want to know which occurs between G. One. So we've got G1, we'll just take a little Read here, G one right here and G. Two, we've got way over here. So that means we've got our S phase as occurring between G. One and G. Two. So we look over to answer choices and choice A. Is S phase. So that's what we're looking for. We can see that G zero is off to its side. It doesn't occur between those two, not our answer. M phase also not in between G one and G two, so not our answer. And of course both D. Both A and B is not our answer. So which of the following phases occurs between the G one phase and the G two phase is choice A. The S phase. That's the DNA synthesis phase where the D. N. A. Is replicating and dividing. So that will be ready for mitosis after the G two phase. See you in the next video.

After S phase, what makes up a single chromosome?
a. Two daughter chromosomes
b. A double-stranded DNA molecule
c. Two single-stranded DNA molecules
d. Two sister chromatids

Verified video answer for a similar problem:

Key Concepts

S Phase of the Cell Cycle

Chromosome Structure

Sister Chromatids