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Chapter 10: Q. 12 (page 276)

Separation of the sister chromatids is a characteristic of which stage of mitosis?

a. prometaphase

b. metaphase

c. anaphase

d. telophase

Short Answer

Expert verified

The correct answer is C.

Step by step solution

01

Step. 1 Introduction

At mitosis, an eukaryotic cell divides to become two genetically similar daughter cells by a precisely synchronized nuclear division.

02

Step. 2 Explanation for correct answer.

Separation of the sister chromatids and the chromosomes get driven toward opposing poles occur during anaphase.

03

Step. 3 Explanation for incorrect answer.

Option a. Kinetochores occur at the centromeres during prometaphase, and microtubules bind to kinetochores.

Option b. During metaphase, chromosomes align and sister chromatid becomes connected to a spindle fibre.

Option d.

During telophase, chromosomes appear at opposing poles, and each pair of chromosomes is surrounded by fresh nuclear envelope material.

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Most popular questions from this chapter

Which protein is a positive regulator that phosphorylates other proteins when activated?

a. p53

b. retinoblastoma protein (Rb)

c. cyclin

d. cyclin-dependent kinase (Cdk)

A gene that codes for a positive cell-cycle regulator is called a(n) _____.

a. kinase inhibitor.

b. tumor suppressor gene.

c. proto-oncogene.

d. oncogene.

What steps are necessary for Cdk to become fully active?

Explain the difference between a proto-oncogene and a tumor-suppressor gene.

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

a. one-fourth

b. half

c. twice

d. four times
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