Question

Classify the following statements into one of the phases of mitosis (prophase, prometaphase, metaphase, anaphase, telophase) 1. Spindle (or mitotic) apparatus is fully formed and arrives at poles for the first time. 2. Spindle microtubules attach for the first time to the centromeres of sister chromatids. 3. The cell begins to elongate and becomes more oval-shaped. 4. Cleavage furrow forms. 5. Chromosomes uncoil, relax, and become invisible. 6. The spindle (mitotic) apparatus disappears. 7. Nucleolus (found in the nucleus) disappears. 8. Sister chromatids separate at the centromeres and begin migration to poles. 9. Chromosomes align at the cell "equator." 10. The nuclear envelope forms around chromosomes at each pole, establishing daughter nuclei. 11. The nuclear envelope disappears completely. 12. Daughter chromosomes arrive at opposite poles of the cell, ending their migration. 13. The nuclear envelope begins to break down. 14. Chromosomes are moving toward the center of the cell. 15. The cell continues to elongate.

          Classify the following statements into one of the phases of mitosis (prophase, prometaphase, metaphase, anaphase, telophase)
1. Spindle (or mitotic) apparatus is fully formed and arrives at poles for the first time.
2. Spindle microtubules attach for the first time to the centromeres of sister chromatids.
3. The cell begins to elongate and becomes more oval-shaped.
4. Cleavage furrow forms.
5. Chromosomes uncoil, relax, and become invisible.
6. The spindle (mitotic) apparatus disappears.
7. Nucleolus (found in the nucleus) disappears.
8. Sister chromatids separate at the centromeres and begin migration to poles.
9. Chromosomes align at the cell "equator."
10. The nuclear envelope forms around chromosomes at each pole, establishing daughter nuclei.
11. The nuclear envelope disappears completely.
12. Daughter chromosomes arrive at opposite poles of the cell, ending their migration.
13. The nuclear envelope begins to break down.
14. Chromosomes are moving toward the center of the cell.
15. The cell continues to elongate.

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Added by Judith B.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Suman K

05/04/2022

Step 1

- This occurs during **prophase**. Step 2: Identify the phase of mitosis where spindle microtubules attach for the first time to the centromeres of sister chromatids. - This occurs during **prometaphase**. Step 3: Identify the phase of mitosis where the cell Show more…

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Classify the following statements into one of the phases of mitosis (prophase, prometaphase, metaphase, anaphase, telophase) 1. Spindle (or mitotic) apparatus is fully formed and arrives at poles for the first time. 2. Spindle microtubules attach for the first time to the centromeres of sister chromatids. 3. The cell begins to elongate and becomes more oval-shaped. 4. Cleavage furrow forms. 5. Chromosomes uncoil, relax, and become invisible. 6. The spindle (mitotic) apparatus disappears. 7. Nucleolus (found in the nucleus) disappears. 8. Sister chromatids separate at the centromeres and begin migration to poles. 9. Chromosomes align at the cell "equator." 10. The nuclear envelope forms around chromosomes at each pole, establishing daughter nuclei. 11. The nuclear envelope disappears completely. 12. Daughter chromosomes arrive at opposite poles of the cell, ending their migration. 13. The nuclear envelope begins to break down. 14. Chromosomes are moving toward the center of the cell. 15. The cell continues to elongate.

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Transcript

00:01 Hello, in this question we are given a set of statements and asked to classify them based on the phase of mitosis in which it occurs.

00:12 Mitosis is a type of cell division.

00:19 We will go through the stages of mitosis, but before that, let us see what happens before mitosis.

00:28 Before mitosis, dna is replicated.

00:38 Any errors during replication are repaired.

00:46 The cell ensures that there is enough protoplasm.

00:49 So there is an increase in protoplasm to make sure both daughter cells receive enough of it.

01:08 To understand the phases of mitosis, take a look at this picture.

01:20 There are five phases.

01:23 The first one is prophase.

01:33 The second one is pro -metaphase.

01:37 The third one is metaphase.

02:01 The fourth one is anaphase.

02:14 And the last one is telophase.

02:24 Let's see what occurs in each of these phases.

02:30 In the pro phase, chromatin condenses within the nucleus to form chromosomes.

02:53 The nucleoless disappears.

02:55 The nuclear envelope becomes uneven and starts its disintegration.

03:29 In the cytoplasm, centrioles duplicate and begin migration to the poles.

03:56 The mitotic spindle starts to assemble between them...

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