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What defines metaphase?

publish date: 2026/06/16 11:03:15.850050 UTC

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Metaphase is one of the most visually distinctive stages of mitosis.

What is the defining characteristic of metaphase?

The spindle begins to form and chromosomes start to condense

Sister chromatids are pulled apart toward opposite poles

Chromosomes arrive at the poles and nuclear envelopes reform

All chromosomes are lined up along the equator of the cell and centromeres have divided

Correct Answer

All chromosomes are lined up along the equator of the cell and centromeres have divided

Explanation

Metaphase is defined by all chromosomes being lined up along the equator (middle) of the cell. The centromeres have divided in two, and each is attached to spindle fibers from opposite poles. Metaphase lasts only as long as all chromosomes remain at the equator - once they begin moving, anaphase has begun.

Reference

Biology: A Self-Teaching Guide

Quizzes you can take where this question appears

Cell Division – Mitosis