Question

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

Short answer

Fused kinetochore assists in sister chromatid co-migration.

Step-by-step solution

Step 1. Introduction

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

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.