What is a key event that occurs during the prophase of...

What is a key event that occurs during the prophase of mitosis? The cytoplasm divides into two daughter cells. Chromosomes align at the cell's equatorial plane. The nuclear envelope reforms around each set of chromosomes. Chromosomes condense and the mitotic spindle begins to form.

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Transcript

00:03 All right, so we have some questions about mitosis and dna and all sorts of good stuff.

00:08 So in this first part, we want to match the mitosis event with the name of the phase.

00:12 Group of answer choices.

00:14 So our choices are interphase or some spelling errors here.

00:17 It looks like.

00:18 Prophase.

00:19 It should be metaphase, anaphaease, telephase.

00:21 So let's look at the first description, centurals, at opposite poles, pull away from each other while spindles retract pulling sister chromatids apart.

00:28 I'm going to put an a here because that is anapase that they are describing.

00:34 Next one, the nuclear membrane breaks down and sister chromatids condense into chromosomes.

00:39 That's going to happen during prophase.

00:42 So we're going to put a p there.

00:44 Next one, spindle fibers line up at the equator of the cell.

00:48 That's going to be metaphase.

00:49 I always remember meta in the middle.

00:52 That's when the chromosomes line up in the middle of the cell, also known as the equator.

00:56 Then we have dna replication occurs.

00:59 Well, that's part of the prepping for mitosis.

01:01 So that's going to happen during interphase.

01:04 That's when replication is going to happen.