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Chapter 10: Q. 9 (page 276)

The mitotic spindles arise from which cell structure?

a. centromere

b. centrosome

c. kinetochore

d. cleavage furrow

Short Answer

Expert verified

The correct option is B.

Step by step solution

01

Step. 1 Introduction 

The mitotic spindle fiber seems to be a structure that arises following cell division and thus is responsible for separating identical chromosomes.

02

Step. 2 Explanation for correct option. 

Mitotic spindles are structures created throughout the cell cycle that divide copy chromosomes in the cells. They are produced by the centrosome.

03

Step. 3 Explanation for incorrect option. 

Option a. Centromeres are genomic sites that regulate kinetochore formation and spindle interaction throughout cell division.

Option c. A kinetochore seems to be a protein area present upon every chromatid's centromere.

Option d. The cleavage furrow seems to be the depression on the surface of the cell that initiates the cleavage process.

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Most popular questions from this chapter

Which molecule is a Cdk inhibitor that is controlled by p53?

a. cyclin

b. anti-kinase

c. Rb

d. p21

Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis?

a. prophase

b. prometaphase

c. metaphase

d. anaphase

p53 can trigger apoptosis if certain cell-cycle events fail. How does this regulatory outcome benefit a multicellular organism?

Which eukaryotic cell-cycle event is missing in binary fission?

a. cell growth

b. DNA duplication

c. karyokinesis

d. cytokinesis

Describe the similarities and differences between the cytokinesis mechanisms found in animal cells versus those in plant cells.
See all solutions

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