1. Education
Send to a Friend via Email
You can opt-out at any time. Please refer to our privacy policy for contact information.

Discuss in my forum

Stages of Meiosis


2 of 9

Prophase I
Stages of Meiosis Prophase I

Lily Anther Microsporocytes in Prophase I

© John C. Glase

Meiosis Stages

Prophase I:

In prophase I of meiosis, the following events occur:
  • Chromosomes condense and attach to the nuclear envelope.

  • Synapsis occurs (a pair of homologous chromosomes lines up closely together) and a tetrad is formed. Each tetrad is composed of four chromatids.

  • Crossing over may occur.

  • Chromosomes thicken and detach from the nuclear envelope.

  • Similar to mitosis, the centrioles migrate away from one another and both the nuclear envelope and nucleoli break down.

  • Likewise, the chromosomes begin their migration to the metaphase plate.

Next > Phases of Meiosis > Metaphase I

Meiosis Study Guide

  1. About.com
  2. Education
  3. Biology
  4. Cell Biology
  5. Cell Division
  6. Meiosis
  7. Stages of Meiosis

©2014 About.com. All rights reserved.