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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 why sexual reproduction is beneficial to a population but can be detrimental to an individual offspring.

Which of the following is not true in regard to crossover?

a. Spindle microtubules guide the transfer of DNA across the synaptonemal complex.

b. Nonsister chromatids exchange genetic material.

c. Chiasmata are formed.

d. Recombination nodules mark the crossover point.

How do organisms with haploid-dominant life cycles ensure continued genetic diversification in offspring without using a meiotic process to make gametes?

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.

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

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