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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

What is a likely evolutionary advantage of sexual reproduction over asexual reproduction?

a. Sexual reproduction involves fewer steps.

b. There is a lower chance of using up the resources in a given environment.

c. Sexual reproduction results in variation in the offspring.

d. Sexual reproduction is more cost-effective.

If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism?

a. 8

b. 16

c. 32

d. 64

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

Animals and plants both have diploid and haploid cells. How does the animal life cycle differ from the alternation of generations exhibited by plants?

Does crossing over occur during prophase II? From an evolutionary perspective, why is this advantageous?
See all solutions

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