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Chapter 10: Q. 10 (page 276)

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

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

Kinetochores form at the centromeres during prometaphase, as well as mitotic spindle microfilaments bind onto kinetochores.

03

Step. 3 Explanation for incorrect option

Option a. The nucleolus dissolves during prophase, and the chromosomes condense by becoming visible.

Option c. During metaphase, chromosomes align as well as each sister chromatid is connected to a spindle fibre.

Option d. Sister chromatids become drawn towards opposing poles during anaphase.

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Most popular questions from this chapter

Which of the following events does not occur during some stages of interphase?

a. DNA duplication

b. organelle duplication

c. increase in cell size

d. separation of sister chromatids

A diploid cell has_______ the number of chromosomes as a haploid cell.

a. one-fourth

b. half

c. twice

d. four times

Chemotherapy drugs such as vincristine (derived from Madagascar periwinkle plants) and colchicine (derived from autumn crocus plants) disrupt mitosis by binding to tubulin (the subunit of microtubules) and interfering

with microtubule assembly and disassembly. Exactly what mitotic structure is targeted by these drugs and what effect would that have on cell division?

What is the relationship between a genome,

chromosomes, and genes?

The mitotic spindles arise from which cell structure?

a. centromere

b. centrosome

c. kinetochore

d. cleavage furrow
See all solutions

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