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Chapter 11: Q. 21 (page 295)

What is the function of the fused kinetochore found on sister chromatids in prometaphase I?

Short Answer

Expert verified

Fused kinetochore assists in sister chromatid co-migration.

Step by step solution

01

Step 1. Introduction

The kinetochore is a disc-shaped complex protein that is associated with centromere.

02

Step 2. Explanation

During metaphase I, homologous chromosomes are arranged in the metaphase plate. In anaphase I, they are separated and move towards the opposite poles but sister chromatids are not separated until meiosis II. So the function of fused kinetochore which is formed during meiosis I is to assist each spindle microtubules that are attached with the tetrad and ensure that it joins to both sister chromatid and co-migrate.

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Most popular questions from this chapter

Explain how the random alignment of homologous chromosomes during metaphase I contribute to the variation in gametes produced by meiosis.

What structure is most important in forming the tetrads?

a. centromere

b. synaptonemal complex

c. chiasma

d. kinetochore

Hydras and jellyfish both live in a freshwater lake that is slowly being acidified by the runoff from a chemical plant built upstream. Which population is predicted to be better able to cope with the changing environment?

a. jellyfish

b. hydra

c. The populations will be equally able to cope.

d. Both populations will die

The part of meiosis that is similar to mitosis is ________.

a. meiosis I

b. anaphase I

c. meiosis II

d. interkinesis

How do telophase I and telophase II differ during meiosis in animal cells?

a. Cells remain diploid at the end of telophase I, but are haploid at the end of telophase II.

b. Daughter cells form a cell plate to divide during telophase I, but divide by cytokinesis during telophase II.

c. Cells enter interphase after telophase I, but not after telophase II.

d. Chromosomes can remain condensed at the end of telophase I, but decondense after telophase II.
See all solutions

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