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Chapter 10: Q. 11 (page 276)

Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis?

a. prometaphase

b. metaphase

c. anaphase

d. telophase

Short Answer

Expert verified

The correct option is D.

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 option.

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

03

Step. 3 Explanation for incorrect option

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 c. Chromosomes get driven toward opposing poles during anaphase.

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Most popular questions from this chapter

The fusing of Golgi vesicles at the metaphase plate of dividing plant cells forms what structure?

a. cell plate

b. actin ring

c. cleavage furrow

d. mitotic spindle

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

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.

The chromosomes become visible under a light microscope during 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?
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