Name:____Answer Key______Date:______Period:_____

Activity: Meiosis Cut and Paste

Introduction: Meiosis is the process that produces sex cells (gametes). Meiosis is referred to as a reduction division due to the fact that there are two divisions resulting in the production of 4 unique sex cells, each with half the number of chromosomes.

Objective: In this activity you will place the phases of meiosis in the correct order showing the progression of how one cell divides to form 4 unique sex cells.

Procedure:

1. Cut out all the cells and labels on the attached sheet.

2. Determine the correct order of your phase labels and glue them onto your

answer sheet.

3. Locate the cells that match each phase of meiosis and glue them onto your

answer sheet. YOU MAY FIND MORE THAN ONECELL FOR EACH STAGE.

Interphase I – 1 cell

Prophase I = 1 cell

Metaphase I = 1 cell

Anaphase I = 1 cell

Telophase I = 1 cell

Interphase II = 2 cells

Prophase II = 2 cells

Metaphase II = 2 cells

Anaphase II = 2 cells

Telophase II = 2 cells

4. Answer the analysis questions.

5. You will be graded as follows:

Meiosis Activity Scoring Rubric
All phase labels are in the correct order / ______/ 10 pts
All cells are placed under the correct phase / ______/10 pts
All questions are answered correctly / ______/6pts
TOTAL: / ______/ 26 pts

Analysis Questions:

  1. How many rounds of division does a cell go through in meiosis? ___2___
  1. a. How many cells are produced after the first round of division? ___2___

b. Do these cells have a full number or half number ofchromosomes?______Yes______

  1. Look at the cells on your answer sheet. Determine the number of chromosomes each cellhas after the first round of division. ____8____
  1. a. How many cells are produced after the second round of divison? ____4____
  1. Do these cells have a full number or half number of chromosomes?______Half______
  1. Look atthe cells on your answer sheet. Determine the number of chromosomes each cellhas after the second round of divison? _____4_____
  1. THINK CRITICALLY!How can you tell the difference between cells that are in meiosis I and cells that are in meiosis II? Explain.

In Meiosis I, during Interphase I, the DNA (chromatin) doubles and then, in Prophase I, the pairs of each set of duplicated chromosomes match up (1 with 1, 2 with 2, 3 with 3, etc.). Therefore, we see genetic material (DNA) as duplicated chromosome pairs which line up for Metaphase I and pairs separate as duplicated chromosomes at Anaphase I. In Telophase I/Cytokinesis I the duplicated chromosomes can be seen in 2 cells.

In Meiosis II, the duplicated chromosomes in 2 cells line up in Metaphase II and separate at the centromere into individual chromosomes in 4 Anaphase II. In Telophase II, This results in 4 cells each having half the chromosome number as the original cell.

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