Summary

This document provides notes on meiosis, a crucial process in cell division. It covers key stages like Prophase I, Metaphase I, Anaphase I, and Telophase I, plus meiosis differences between males and females, including spermatogenesis and oogenesis. Keywords: Meiosis, Genetics, Cell Division, Biology.

Full Transcript

Okay, here is the conversion of the given text and images into a structured markdown format. ### Meiosis Notes Meiosis differs from mitosis in a few key ways: 1. ... 2. ... Meiosis begins in special cells called \_\_\_\_\_\_\_. These are located in the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ in males an...

Okay, here is the conversion of the given text and images into a structured markdown format. ### Meiosis Notes Meiosis differs from mitosis in a few key ways: 1. ... 2. ... Meiosis begins in special cells called \_\_\_\_\_\_\_. These are located in the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ in males and the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ in females. These cells are \_\_\_\_\_\_\_\_\_\_ meaning, they have the complete number of chromosomes. During Interphase, the DNA replicates and the cell prepares for Meiosis. Meiosis can be divided into 2 parts: Meiosis I and Meiosis II. ### Meiosis I **Prophase I** - During prophase I, the nucleus and nucleolus break down. The chromosomes thicken and become visible. The \_\_\_\_\_\_\_\_\_\_\_\_\_\_ chromosomes pair up forming a \_\_\_\_\_\_\_\_\_\_\_ and the process of \_\_\_\_\_\_\_\_\_\_ over occurs. During this process, \_\_\_\_\_\_\_\_\_ jump from one chromosome to the other. **Metaphase I** - The spindle fibers pull the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ to the middle of the cell. **Anaphase I** - The \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ chromosomes are pulled apart. **Telophase I** -The chromosomes reach the poles, nuclei reform, and the cell \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ forming 2 \_\_\_\_\_\_\_\_\_\_\_ cells. (meaning half the number of chromosomes). At this point, the cells enter what is called \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. This looks like interphase, except DNA replication does not occur again. ### Meiosis II **Prophase II** - Nucleus and nucleolus breakdown, chromosomes become visible. **Metaphase II** - Chromosomes are pulled to the middle. **Anaphase II** - The \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ separate. **Telophase II** - The chromosomes reach the poles, nuclei reform, and cells divide to form \_\_\_\_\_\_\_\_\_\_\_\_ cells. Because the overall number of chromosomes is reduced, meiosis is known as \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ ### How is meiosis different in males compared to females? **Spermatogenesis** - This is the term for meiosis in \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. This occurs in the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. It starts at \_\_\_\_\_\_\_\_\_\_\_ and continues until \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. In the end, \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_cells are produced. **Oogenesis** - This is the term for meiosis in \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. This occurs in the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. It starts \_\_\_\_\_\_\_\_\_\_\_ but pauses at prophase I. This resumes at puberty where one cell is released per month (correlates with menstrual cycle). This process continues until \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. In the end, only \_\_\_\_\_\_\_\_\_\_\_\_\_ cell is produced along with 3\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. The 1 viable egg is called a \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. The 3 non-viable cells are called \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. During \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ (the fusion of 2 haploid gametes), a \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_is formed.

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