Mitosis and meiosis lab activity

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The purpose of the activities is to help you review material you have already studied in class or have read in your text. Some of the material will extend your knowledge beyond your classwork or textbook reading. At the end of each activity, you can assess your progress through a Self-Quiz. To begin, click on an activity title. Each parent cell has pairs of homologous chromosomes, one homolog from the father and one from the mother.

In meiosis, the maternal and paternal chromosomes can be shuffled into the daughter cells in many different combinations in humans there are 2 23 possible combinations! This ensures genetic variation in sexually reproducing organisms.

mitosis and meiosis lab activity

Further genetic variation comes from crossing overwhich may occur during prophase I of meiosis. In prophase I of meiosis, the replicated homologous pair of chromosomes comes together in the process called synapsisand sections of the chromosomes are exchanged. You can see that after crossing over, the resultant chromosomes are neither entirely maternal nor entirely paternal, but contain genes from both parents.

Synapsis and crossing over occur only in meiosis. The lac Operon in E. LabBench Activity Crossing Over Each parent cell has pairs of homologous chromosomes, one homolog from the father and one from the mother. All Rights Reserved.Introduction There are two types of nuclear division, mitosis and meiosis.

Mitosis is the first of these studied in this lab. It is easily observed in cells that are growing at a rapid pace such as whitefish blastula or onion root tips, which are used in this lab. The root tips contain an area called the apical meristem that has the highest percentage of cells undergoing mitosis. The whitefish blastula is formed directly after the egg is fertilized. This is a period of rapid growth and numerous cellular divisions where mitosis can be observed.

Just before mitosis the cell is in interphase. In this part of the cell cycle the cell will have a distinct nucleus and nucleoli where the thin threads of chromatin are duplicated. After duplication the cell is ready to begin mitosis and its starts with a step called prophase.

In prophase, the chromatin thicken into distinct chromosomes and the nuclear envelope breaks open releasing them into the cytoplasm. The first signs of the spindle begin to appear. Next the cell begins metaphase, where the spindle attaches to the centromere of each chromosome and moves them to the same level in the middle of the cell. This level position is called the metaphase plate. Anaphase begins when the chromatids are separated and pulled to opposite poles. Then, the final stage is telophase.

The nuclear envelope is reformed and the chromosomes gradually uncoil. Cytokinesis may occur, in which case, a cleavage furrow will form and the two daughter cells will separate. Meiosis is more complex and involves two nuclear divisions.

Mitosis: Splitting Up is Complicated - Crash Course Biology #12

The two divisions are called Meiosis I and Meiosis II and they result in the production of four haploid gametes. This process allows increased genetic variation due to crossing over where genes can be exchanged. The process, like mitosis, depends on interphase to replicate the DNA.

Meiosis begins with Prophase I. In this stage, homologous chromosomes move together to form a tetrad and synapsis begins. This is where crossing over occurs resulting in the recombination of genes. Metaphase I moves the tetrads to the metaphase plate in the middle of the cell, and Anaphase I reduces the tetrads to their original two stranded form and moves them to opposite poles.

Telophase I then prepares the cell for its second division. Meiosis II generally resembles mitosis except that the daughter cells are haploid instead of diploid.

mitosis and meiosis lab activity

DNA replication does not occur in Interphase II, and prophase, metaphase, anaphase, and telophase occur as usual. The only change is the number of chromosomes. The process of crossing over can be easily studied in Sordaria fimicola, an ascomycete fungus. Sordaria form a set of eight ascospores called an ascus. They are contained in a perithecium until they are mature and ready for release. Crossing over can be observed in the arrangement and color of these asci.

If an ascus has four tan ascospores in a row and four black ascospores in a row arrangementthen no crossing over had taken place.

However, if the asci has black and tan ascospores in sets of two arrangement or two pairs of black ascospores and four tan ascospores in the middle arrangementthen crossing over had taken place.

Hypothesis Mitosis occurs in whitefish blastula and onion root tip, and it is easily observable. Meiosis and crossing over occurs in the production of gametes and spores. Materials This lab requires prepared slides of whitefish blastula, onion root tips, and Sordaria, pencil, paper, a light microscope, and a chromosome simulation kit.Devereaux's Science Classes.

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mitosis and meiosis lab activity

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This activity is designed to help students review the processes of mitosis and meiosis and to ensure that students understand how chromosomes move during mitosis vs.

Students arrange the cards from a shuffled deck of the stages of mitosis and meiosis in the sequence of steps that occur during cell division by mitosis and another sequence of steps that occur during cell division by meiosis. The first file shown below can be used to print the simpler version of the deck of cards for this activity and the second file can be used to print the more challenging version of the deck of cards for this activity.

The third file gives the teacher notes. This website is exactly what I was looking for, a practical way of teaching Biology. Thank you so much! Thankyou so much for publish this useful things. I really appreciate your job, this is really help my Research Proposal simulation. Unfortunately, we do not have the budget to make and send card decks.

Fortunately, it is relatively easy for you to make the card decks by printing one of the files provided above, photocopying, and cutting into cards perhaps with the help of student volunteers. Please see additional instructions in the Teacher Notes file above. Resources for Teaching about Coronavirus has descriptions and links for multiple resources to use in teaching and learning about coronavirus.

This page also includes some resources for teaching remotely. Narrative is determined not by a desire to narrate but by a desire to exchange. Mitosis and Meiosis Card Sort Activity This activity is designed to help students review the processes of mitosis and meiosis and to ensure that students understand how chromosomes move during mitosis vs. Attachment Size mitosismeiosiscards. Thank you very much for sharing this great activity and card decks.

I am grateful. I am a biology teacher and very interested in the above cards Appreciate if you could mail me a copy Thank you very much. To prevent automated spam submissions leave this field empty.

Mitosis and Meiosis Card Sort

Notify me when new comments are posted.Meiosis Classroom Demonstration. Photo guide and Word doc assignment included. Supplies Required for Meiosis Activity:. I n this exercise, the original cell starts with six chromosomes, so the following supplies are needed.

It helps keep materials organized if interlocking beads and string are each in separate, smaller baggies. Photo 1. First string one interlocking bead onto each strand of chromatin. Set one of each type of pipe cleaner 6 aside. Those will come into play when DNA replicates. Photo 2.

Lab 3 Sample Ap Mitosis & Meiosis

It makes exercise too complicated and messy. Photo 3. Snap together the two interlocking beads that represent the centromeres, bringing the other six pipe cleaners into play.

Photo 4. Close-up of replicated chromatin. Meiosis I:. Prophase Ichromatin condenses into chromosomes. Twist pipe cleaners so that they are curly. Metaphase Ihomologous chromosomes line up at cell equator. Anaphase Ihomologous chromosomes move toward opposite poles of the cell.

Early Telophase Ihomologous chomosomes have migrated to opposite end of the cell. Cytokinesis begins. Photo 5. Meiosis II:. Prophase II not pictured. Metaphase II, sister chromatids line up at equator of each cell.

Mitosis Activities for Your Middle School Science Classroom

Anaphase II, sister chromatids separate and chromosomes move to either end of the cells.Escape Room Bundle. Teachers Pay Teachers is an online marketplace where teachers buy and sell original educational materials.

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Social Studies - History. History World History. For All Subject Areas. See All Resource Types. This breakout escape room is a fun way for students to test their knowledge of mitosis and meiosis.

Full "Letter" sized cards as well as smaller sized cards are provided. Important: How to Make Completely Digital This product normally requires the printing of the questions to accompany a digital fo. BiologyOther ScienceGeneral Science. ActivitiesFun StuffPrintables. Add to cart. Wish List. In this quick-and-easy activity, students move through the basic steps of meiosis, using coloring pencils, in order to visualize possible gametes that a dragon could produce. The activity proceeds as follows Students answer pre-activity questions about meiosis2.

Students use a chart, and homolog. ScienceBiologyGeneral Science. ProjectsActivitiesGraphic Organizers. Saint Patrick's Day Meiosis Activity.

This wonderful activity will have students using clovers as manipulatives to go through the stages of meiosis.Did you download this item? Except where otherwise notedthe works contained in this website are licensed under a Creative Commons Attribution 4. Accessibility Support Strategy.

Terms of Service. Toggle navigation. In this activity, prepared slides of plant and animal cells are examined in various stages of development.

Background information discusses the cell theory, the mechanisms underlying the third principle of the cell theory -- cells are descended from preexisting cells, the mitotic cell cycle, sperm and egg meiosis, and the relationship between mitosis and meiosis.

The lab activity also includes lab exercises and summary questions. NANSLO Remote Lab Activity: Mitosis and Meiosis provides information on the cell cycle, the stages of mitosis from prepared slides, instructions on how to calculate the percentage of time a cell spends in each stage of the cell cycle, quantifies the relationship between cell division and cell growth, and describes the relationship between mitosis and meiosis It contains lab exercises and summary questions.

Additional Public Access To Materials: www. Educational Level of Materials: 1st year Community College or equivalent. Time Required: 2 Hrs connected to laboratory through the Internet plus pre-lab and post-lab work. Interactivity Type: Active - requires user to respond to prompts, questions, etc. Quality Note: Curriculum expert in this discipline worked with Discipline Panel of faculty to define learning objectives needed for this lab activity.

Mitosis and Meiosis Card Sort

During development, teleconferences were held to discuss lab activity being developed. Draft activity was posted to listserv for review by Discipline Panel and other faculty in that discipline. Based on feedback, lab activity was modified prior to posting as final. Experts in remote web-based science labs who are also science faculty worked together to define the web-enabled interface design used by students to perform the lab activity via the Internet and created the lab setup robotics, scientific equipment, and items needed to complete the lab activity testing it with lab technicians and others prior to launching the final lab activity.

Quality of Subject Matter was assured by: Consultations during development of instructional materials.


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