Mitotic index lab. This at-home activity only looks at the mitosis of onion cells and I plan to add cancer and mitotic index as a separate activity. the proportion of dividing cells). The mitotic index (MI) is defined as the total number of dividing cells within the cell cycle, serving as a parameter to assess cytotoxicity levels of agents, where deviations from the negative control can indicate alterations in growth and development or lead to disordered cell proliferation. Part I: Cell cycle and Mitotic Index What is a cell? The cell is the basic unit of life. It outlines the research question, aim, background information on cell division and onion root structure. … Mar 3, 2015 · Use evidence from your data table, as well as from the background information and your notes to explain the difference in mitotic index (also known as the % of cells dividing) between the normal and cancerous cells. First, students collect and analyze data on mitotic index in various tissue types and cancer to understand how cancer cells differ from normal cells. Jul 22, 2025 · Prior to the onset of mitosis, the chromosomes have replicated and the proteins that will form the mitotic spindle have been synthesized. What Does A Pathology Report Tell You? Skin samples taken by a biopsy or surgical excision are typically sent to a pathology laboratory for microscopic examination and diagnosis. Outline how the mitotic index is calculated. Sep 26, 2022 · The mitotic index value tells us the percentage of the observed cells that are undergoing mitosis compared to the cells that are not undergoing mitosis. relating to the act…. These regions of growth are good for studying the cell cycle because at any given time, you can find cells that are undergoing mitosis. Oct 31, 2020 · Investigation: Mitosis This mitosis investigation was created during the 2020 pandemic for remote learning. Mitotic index = n/N × 100 Mitotic index is used to quantify the differences in cell division when environmental parameters are changed. Mitotic Index (MI) is defined as a ratio of the total number of dividing cells (n) and the total number of cells (N) in a particular focus chosen randomly under the microscope. A pathologist is a physician who diagnoses disease through laboratory tests and direct evaluation of cells, tissues, and organs. 2d: The mitotic index is an important prognostic tool for predicting the response of cancer cells to chemotherapy. Briefly outline the procedure involving how you will calculate the mitotic index. Moreover, mitotic activity correlates to cellular … more Dec 17, 2024 · Learn about mitotic index for your IB Biology course. May 11, 2006 · Here are all the stages of mitosis—from the first step, interphase, to the last, cytokinesis. It is a method used to assess cell proliferation and is determined by counting the number of mitoses present in a certain number of cells. Observing Differences in Cell Division in Various Locations of an Onion Root Tip Through Use of the Explore mitotic index calculation and its application in analyzing cell division in onion root tips. In this article, we will explore the definition, significance, and historical background of the mitotic index, as well as its importance in cell Investigation:Â Mitosis and Cancer One of the basic tenets of biology is that all new cells come from living cells. This is done with a microscope, with the percentage of cells in the M phase of the cell cycle called Mitotic Index Value. Firstly, when looking through the microscope, something very noticeable was seen. The introduction will give a detailed description of what The meristematic region in the root tip is the actively growing region and thus the mitotic index is high. The mitotic index (percentage of cells in mitosis at any time) provides a measure of the capacity of cells to divide and of the rate of cell division. Jun 9, 2025 · Introduction to Mitotic Index The mitotic index is a crucial parameter in cell biology that measures the proportion of cells in a population undergoing mitosis. Question: Introduction to Biology and Lab - BIO105 Determination of Mitotic Index in Onion Root CellsName: SephoraPartner:IntroductionWhen a population of cells is examined with a mircroscope, the percentage of the cells in the M phase of the cell cycle is called the Mitotic Index Value. The cell nucleus, nuclear membrane, nucleolus, and chromatin are visible. Bunker Hill Community College Genetics (BIO208) Fall 2020 Mitotic Index Lab Submitted by Nhu Tran Bao Nguyen / My Duyen Jan 20, 2018 · Examine onion root tip cells to determine how much time is spent in each phase of the cell cycle, and analyze mitotic index data in cancer studies on dogs. Mitotic Index Lab Report Results: My results of the Mitotic Index Lab Report Onion root tip (Allium sp. Calculate mitotic index & estimate stage lengths. Find information on root tip squash technique, calculating mitotic index and identifying mitotic stages. Different types of normal tissues in the human body have different mitotic indices. New cells are formed by the process of cell division which includes both the division of the cell’s nucleus, mitosis, Â and the division of the cell’s cytoplasm, cytokinesis. Feb 16, 2021 · Whereas mitotic count and index are dependent on the duration of mitosis (which is variable), the mitotic rate is not affected, but assessment usually requires metaphase arrest or labeling methods in viable cells or tissue. How do you think the mitotic index of the blastula tissue compares to that of normal tissue from adult whitefish? Explain. Mitotic Index Lab Report Results: My results of the Mitotic Index Lab Report Interphase Prophase Metaphase Anaphase Telophase Total # of cells 39 9 8 22 7 85 Nov 26, 2017 · View Lab - Mitotic Index Lab Report. TZ0. The goal of this experiment is to calculate the mitotic index from real microscope images taken by scientists. Mitotic Index is a calculation that can be done to determine how actively a group of cells is dividing. Learn more. The major purpose of mitosis is for growth and to replace worn out cells. The notes towards the end of the clip explain this. 7 24 29. docx from BIO 4U at York Mills Collegiate Institute. Results Table 1. 1. Mitotic cell divisions are used by organisms to repair tissue, growth, and asexual reproduction. 67 Total 36 100% f- - - - Based on the data in the chart, during the 24-hour p Abstract: The lab that was performed this week was to learn how to properly use a microscope and study the different phases that cells go through. The main goals of this lab are to 1) give students an opportunity to see what real cells look like when they undergo mitosis, 2) reinforce concepts related to mitosis from class, 3) have them apply data analysis skills (e. Mitotic Index Activity Activity A mitotic index is a calculation that is used to determine how long a cell spends in each phase of mitosis. MITOTIC definition: 1. 21N. Mitotic index In cell biology, the mitotic index is defined as the ratio between the number of a population's cells undergoing mitosis to its total number of cells. relating to the act or process of mitosis (= a type of cell division): 2. It is therefore limited in its practical application for diagnostic purposes. Learn how to calculate mitotic index. : SSS MA 6. These onion root tip plant cells are in interphase, prior to the start of mitosis. 67 2. Use our Mitotic Index Calculator for accurate and quick cell division calculations. The calculation of the mitotic index is essential for various scientific and clinical studies, such as developing cancer treatments and understanding While conducting the Mitotic Index Lab it was difficult to identify what stage the cells were in because the magnification was not high enough. 8 I 26 31. Quantitative data on mitosis in Allium cepa (preprepared The document summarizes an experiment to observe and analyze the stages of mitosis in onion root tip cells. Mitosis, the process of chromosome condensation and separation into new daughter nuclei, is one part of the cell cycle. It's as easy as cell pie! Aug 23, 2021 · View Investigation of Mitotic Index Lab_Results. In interphase, metabolism of the cell increases, and it is often termed the most active phase of the cell cycle. In plants, the roots continue to grow as they search for water and nutrients. Count a minimum of Sep 7, 2022 · Moreover, mitotic activity correlates to cellular growth activity. The document summarizes an experiment to determine the mitotic index of 4 onion (Allium cepa) root tips over 4 days. The characteristic changes in the appearance of chromosomes as they proceed through the 21M. Aug 16, 2023 · The mitotic index provides valuable information about your dog’s cancer, and it should be included on any pathology report. The second objective of this lab is to observe and calculate the duration of mitotic stages and mitotic index of each mitotic stage within the onion root during root elongation. The word "mitosis" means "threads," and it refers to The different stages of mitosis altogether define the mitotic phase (M phase) of a cell cycle—the division of the mother cell into two daughter cells genetically identical to each other. Mitotic index (MI) calculated to measure a cellular growth is also very important, as high value of mitotic index A higher mitotic index in breast cancer cells suggests that chemotherapy will selectively kill cancer cells over normal cells. The onion root tip is an area of active growth and, therefore, one would expect that mitosis is occurring at a rapid rate. Abstract: The purpose of the laboratory experience is for students to determine the Mitotic Index Value of cells in onion root tips. TZ2. Compare the mitotic index of the two types of tumors. Mitosis: Practice Questions # 1 As a result of mitotic cell division, a cell having 80 chromosomes gives rise to two cells each of which has a chromosome number of The different stages of mitosis altogether define the mitotic phase (M phase) of a cell cycle—the division of the mother cell into two daughter cells genetically identical to each other. MAN in) ok 绝 0 意 . Â Jan 12, 2011 · Explore mitosis stages in onion root tips. The meristematic region in the root tip is the actively growing region and thus the mitotic index is high. In this lab students will observe onion and fish mitosis cells, calculate onion root mitotic index and then use their knowledge about cancer and mitotic index to determine whether unknown slides are cancerous or not. docx from BIO 204 at National University of Sciences & Technology, Islamabad. It represents the percentage of cells undergoing mitosis, providing key insights into cell division and growth. The mitotic index of a cell population is the ratio between the number of cells in mitosis and the total number of cells. Jul 2, 2024 · Quiz yourself with questions and answers for Mitotic Index Lab Theory Quiz, so you can be ready for test day. Tabulate the number of cells at a particular stage of mitosis and calculate the mitotic index. The meaning of MITOTIC is of, relating to, involving, or occurring by cellular mitosis. docx from BIO 208 at Bunker Hill Community College. Explore educational resources and literature projects on FlipSwitch's Helios 2 platform, designed to enhance learning through diverse reading materials and engaging content. Mitotic Index Mitotic Index 2. Students examine root tip regions under a microscope and tally the number of cells observed in each phase (interphase, prophase, metaphase, anaphase, telophase) to calculate the relative length of each phase and determine which region has the highest mitotic activity. Search published literature or scientific journal to determine the cell cycle intervals of onion. This was the fact that when the cells were in interphase, it was very distinct as the chromatin were bunched up together and seemed Question: Procedure 1- Estimating the relative length of each stage of mitosis and interphase. In order to examine cells in the tip of an onion root, a thin slice of the root is placed onto a Oct 29, 2024 · Mitotic Index Laboratory Mitotic Index (MI) is defined as the ratio between the number of cells in a population undergoing mitosis to the total number of cells in a population. e. A Feb 1, 2025 · Revision notes on Calculation of Mitotic Index for the Edexcel International A Level (IAL) Biology syllabus, written by the Biology experts at Save My Exams. Onion cells are used because the bulbs are able to grow May 1, 2023 · Biology document from Westfield State University, 3 pages, Gavin Kelly Section 3 Lab Mitotic Index Lab: Count % in Phase Mitotic Index Interphase Prophase Metaphase Anaphase Telophase 20 10 3 2 1 56% 28% 8% 6% 3% 13. Biology, cell cycle, cancer. 3. It can be used as a clinical tool to determine the degree of cell proliferation within a tissue (e. Onion cells are used because the bulbs are able to grow Miotic Index Bio Lab Notes how to calculate the miotic index? to calculate the mitotic index, you will need to observe cells under microscope and count the Abstract Cellular division is a fundamental process of cellular growth. Mitosis is the process in which a eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. The word "mitosis" means "threads," and it refers to. Mitosis or mitotic division is a process of cell division, limited to the animal’s somatic or non-reproductive cells and vegetative plant cells. We learned how to calculate the mitotic index for plant cells in the onion root tip. Calculate mitotic index, compare normal & cancer cells. In a normal lab setting, we would look at tissue sections from embryonic tissue (blastula stage) of whitefish. It is used to identify the sites of growth within a tissue and to Mitotic Index Activity Activity A mitotic index is a calculation that is used to determine how long a cell spends in each phase of mitosis. The mitotic index will be higher in the cancerous tissue because the rate of mitosis would be very rapid, versus the onion root tip, which has a controlled rate of mitosis when cells are healthy. Class: BIO 208-01 Date: 22 February 2016 Abstract: Mitosis is a crucial process to asexually reproduce, to renew cells, and to develop from a single fertilized egg or zygote. Mitotic Index Cells in mitosis Question: QUESTION 7 From the laboratory simulation, which sample had the highest Mitotic Index? [2 pt] a. Calculate mitotic index in this lab exercise. Mast cell tumors are the most common skin tumor in dogs. : 3 3 : od 2. Discuss, Ah-ha moments start here. Also, we were able to estimate the mitotic index percentage value. Include your citation Explore cell division & cancer with this virtual lab worksheet. AI generated definition based on: Mutation Research/Reviews in Mutation Research, 2009 Mitotic Index Activity Activity A mitotic index is a calculation that is used to determine how long a cell spends in each phase of mitosis. 3 3. Digication ePortfolio :: bio208-01brianbrian by Brian Umana at Bunker Hill Community College. Also we learned how to determine the mitotic index for the two onion roots that was observed. Title: Experiment of mitosis, cell cycle, phase interval, and mitotic index in allium root hair. This lab report analyzes mitotic stages, durations, and mitotic index. This lab explores three common cancers. 2. onion root tip b. HL. Explore quizzes and practice tests created by teachers and students or create one from your course material. During mitosis one cell divides once to form two identical cells. 1 Measurement of mitotic index of basal cells Around 2000 basal cells were observed consecutively in HE stain microtome section, and counted the cell with split-phase, and calculated the mitotic index of basal cells, and then statistical analysis. Mitosis is a type of cell division that results in two daughter cells that have the same number/kind of chromosomes as the parent cell. Calculating mitotic index 3. After learning about the cell cycle and mitosis, our lab group calculated the Mitotic Index Value with our own onion root slides. The mitotic index may be elevated during processes that promote division, such as normal growth or cellular repair. Make sure you know how to calculate mitotic index. It is a w Mitosis in growing root tips Cells in actively growing tissue go through a cycle of metabolic activity, DNA replication, chromosome segregation and cell division known as the cell cycle. for cancer identification). 33 6. Results - Procedure 1 Systematically scan the root tip below and count the total number of cells in the field of view and record that number in the table below. both were similar QUESTIONS Oct 21, 2024 · Cell Cyle and Mitotic Index Module Pre-lab Cell Cycle and Mitotic Index Students are required to study the pre-lab introduction to the material and answer the 5 assessment questions on their own as part of their pre-lab work. whitefish blastula c. In order to calculate the Mitotic Index of a sample, you first count the number of cells that are actively dividing (cells that are in Prophase, Metaphase, Anaphase, or Telophase). Jun 30, 2021 · View BIOL 1009 Mitotic Index Lab Report. Though the technique is widespread with well-established protocols, we noted inconsistencies in the distribution of cell division stages during morning and afternoon sample preparation done for lab practical The graph shows the mitotic index in the roots of lentil plants at different distances from the end of the root. Question: LAB #9, Mitosis and Cell Division, Questions 1. Mitosis is a process where a single cell divides into two identical daughter cells (cell division). Biology lab for High School/Early College. A pathology report is issued by a pathologist or dermatopathologist. docx from BIOL 2108K at Albany State University. IB Mitotic Index Lab (Responses) - Google SheetsFile View Insert Data Tools Extensions Help View only Mitotic Index Lab Report Mitotic Index Lab Data Table GroupInterphaseProphaseMetaphaseAnaphaseTelophaseTotal 1161357950 214813232168 3261123850 4241841350 51045319201197 Our Group221746251 Total340125364025566 Qualitative Observations: When viewed through the microscope, the onion root tip cell were seen in a light purple colour in result of Apr 22, 2019 · View Lab - Mitotic Index Studies Lab Report. Older dogs are most commonly affected. 00 1. 5: The graph shows the mitotic index in the roots Aug 18, 2018 · Mitotic index is widely used to evaluate the genotoxic potential of many substances in studies of environmental biomonitoring (Smaka-Kincl et al. ) Explore mitotic division in onion root tips. g. The simplest and classical method to measure mitotic activity (mitotic index (MI)), is the manual counting of mitotic cells among a given cell population of interest. understanding p-values) developed in prior labs. Suggest one other way in which vinblastine could block mitosis. . Resources Jun 24, 2024 · Utilizing the actively growing root tips of onions and sprouting lentils has become a standard practice in science laboratories for elucidating the various stages of mitotic cell division. You can find the formula for calculating mitotic index in the background information for this lab exercise. pdf from BIOL 1009 at University of Minnesota-Twin Cities. This index can be calculated by determining the number of cells within an active, mitotically dividing region (meristem) that are in some phase of mitosis (prophase, metaphase, anaphase or telophase): * 100% Mitotic Index = # Analysis of data Calculate the mitotic index. Whereas mitotic count and index are dependent on the duration of mitosis (which is variable), the mitotic rate is not affected, but assessment usually requires metaphase arrest or labeling methods in viable cells or tissue. Second, students prepare and view slides from cancer cells with and without Taxol chemotherapy treatment in order to determine which stage of mitosis is affected by this anti-mitotic drug. How to use mitotic in a sentence. Apply an analytical technique by which the relative length of each stage of mitosis can be estimated. The mitotic index refers to the frequency of mitotic figures visible in histological sections of biopsy specimens. LAB 8. Dividing More Often to Dividing Less Often. Explain. The formula for mitotic index is as follows: (# cells in phase) Total cells counted Using the image below calculate the mitotic index of the onion root tip. Observing and identifying mitotic stages using a compound light microscope 2. Mitosis begins at prophase with the thickening and coiling of the chromosomes. TZ1. Oct 18, 2024 · Interphase is a part of the cell cycle where the cell copies its DNA as preparation for the M phase (mitotic phase). It does not occur in the animal’s reproductive or germ cells (sperms and ova) that undergo the meiosis division phase. Jul 16, 2024 · 1 Isaac Lam February 15, 2024 Mitotic Index Lab Results and Analysis Table 1: Class results for Onion Root Tip lab: During the lab itself, many qualitative observations were made. However, many nuclei were visible indicating that the cell were in interphase or early prophase. Using a calculator, sum up the total number of cells you counted by adding the number of mitotic cells and cells in interphase together. Understanding Mitosis: Calculating Mitotic Index & Cell Cycle BUNKER HILL COMMUNITY COLLEGE Genetics (BIO208) Spring 2021 Title: Mitotic Index Lab Submitted by: Keshell Jordan Date: 02/11/2021 fAbstract Mitosis is a very important part in a cell cycle, especially within the aspects of asexual reproduction. The latter can be accomplished via phase contrast microscope observation. Mitosis and Meiosis Ha 100 TABLE 2: Using the mitotic index to e Phase Interphase Prophase Metaphase Anaphase Telophase Using the mitotic index to estimate the amount of time spent in a phase % Time in Phase Group count (out of 100) % Time in Phase Class Average 22 T 26. CANCER LAB PROBLEM (Not to be answered at th is stage in the lab): What is the difference in mitotic index of normal cells v. In this lab we determined the mitotic index value of cells in onion root tips. Simulating mitosis and meiosis using pipe cleaners 4 Conclusions/ Summary In conclusion, this lab was successful in helping to understand the different phases of the cell cycle, and the how to solve and get a betting knowledge of the mitotic index. Some predisposed breeds of dogs include Boxers, Boston terriers, Bulldogs, pugs, Labrador retrievers, and golden Study with Quizlet and memorize flashcards containing terms like What are stages of the cell cycle?, What are the phases of mitosis?, what is cancer? and more. A biology lab report for high school/early college. SL. docx from BIOLOGY MISC at Lesley University. In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes. Chad Dutrieuille February 18, 2019 BIOL 2108K Mitotic Index Studies Introduction: 1. Mitotic Index Lab: Assessing the Mitotic Index of Onion Root Cells BIO 208 Abstract Mitosis plays an important role This activity is designed for students to practice calculating mitotic index using hi-resolution micrographs of an onion root tip. Perfect for high school biology students. This lab will help you practice the following skills : 1. 2. We would like to show you a description here but the site won’t allow us. Nov 30, 2021 · View Mitotic Index Lab Report. This lab involves mitosis, mitotic index calculations, field of view measurements, Jan 22, 2024 · Lab 7: Cell Division Purpose: The purpose of this lab is for you to observe and understand the stages of mitosis and meiosis and predict phenotypes of genetic crosses. cancerous cells? The objectives of this lab exercise are for you to: Better understand the process and stages of mitosis. In this lab report, all of the areas of the lab itself will be discussed as follows. The Question: Using the data you collected in the table above, calculate the mitotic index of each cancerous tissue type. From the following list, which normal tissues would you expect to have the highest mitotic index: muscle, skin, kidney, or lung? Explain your answer. What does this information tell you about the cells in the sample? 20 604 3% 42 560 7% The Grade 3 tumor has a significantly higher mitotic index compared to Grade 1, indicating move rapid cell division and greater aggressive potential. Feb 22, 2016 · Lab report 3. The final product can be multiplied by 100 to express the index as a percentage. Oct 16, 2019 · View Lab - Mitotic Index Lab. Prepare your own specimens of onion root in which you can visualize all of the stages of mitosis. The percentage of the cell cycle that is spent in mitosis is called the mitotic index. 33 0. 21M. The mitotic index is a measure of the proliferation status of a cell population (i. The hypothesis, variables, materials, procedure, and risk assessment are described. CLEAR Use the data and information from the virtual lab to write a CLEAR. From the mitotic index value, this lab will also estimate the timing of cellular proliferation. The results of our experiment Feb 21, 2024 · Abstract The "Mitosis Lab", as it sounds, is a lab all about the process, zones, calculations, and stages of Mitosis. By the end of this experiment, you should be able to recognize at least 2 cell structures in the microscope images, categorize microscope images of cells into stages of mitosis, and explain how the images were collected. Consider the following mitotic index numbers for cells in different tissue types. Onion root tip mitosis refers to a type of cell division where the parent cell produces two identical daughter cells resulting in two diploid daughter cells. Oct 5, 2020 · In this activity, we’ll use lab data to test the hypothesis that lectin promotes mitosis in onion roots. D. 1f: Some anticancer drugs inhibit mitosis by blocking the formation of the spindle. In previous years, biology students would view slides in the lab and analyze data on cancer and mitotic index. Sort them into order, from cell types that are dividing more often to cell types that are dividing less often. Lab Partner (s): Destinie Jones & Kallyn The meristematic region in the root tip is the actively growing region and thus the mitotic index is high. Students are also asked to describe the trend in mitotic index as the distance from the root tip increases and to design an experiment to identify a causal relationship. Students should be able to describe the steps of mitosis in the correct order based on what they learned in lecture, but The mitotic index is defined as the proportion of cells that are in the process of dividing. The mitotic index is how to measure the percentage of cells that are going through mitosis in a certain amount of time. We focused the slide in on the point of growth, and counted each cell, noting what phase each was in. It gives you an idea of how fast a tumor is growing, which can help determine your dog’s prognosis – or the expected course of progression of your dog’s cancer – and can help with making important treatment decisions. . Brian UmanaBio 208lab Partner: Andrea Randolph2/22/2016 AbstractIn this lab we observed two stained root tips of an onion under a microscope and observed cells undergoing mitosis. This index can be calculated by determining the number of cells within an active, mitotically dividing region (meristem) that are in some phase of mitosis (prophase, metaphase, anaphase or telophase): Mitotic Index = # of Mitotic Lab bunker hill community college genetics bio 208 lab mitotic index name ayoub guezri start of investigation january 24th, 2022 end of investigation Explore cell division in normal & cancerous tissues. Ed Reschke/Photolibrary/Getty Images. Calculate mitotic index in Sourcetable with ease, simplifying your cell division studies. Mitotic Index Name: Igor Popovich Lab partner: Michail Agrba Professor: Paul Kasili, Ph. 1996), manly using Allium cepa or Lactuca sativa as testing organisms due to the big size of their cells, which makes easier the visualization of different mitotic phases. 8. It is a valuable tool for understanding cell proliferation, growth, and development. The great majority of the cell divisions that happen in your body involve mitosis. Nov 19, 2020 · View LEAP_Lab_report from BIO 1406 at Malakoff H S. [Source: Physiologia Plantarum, Volume 105, Issue 1, January 1999, Pages 171–178, Effect of microgravity on the cell cycle Dec 29, 2018 · This mitosis investigation was created during the 2020 pandemic for remote learning. PART 2: How is Mitotic Index Used in Cancer Studies? Mast cell tumors (MCT) represent a cancer of mast cells, which are a type of white blood cell involved in allergy and inflammation. We’re in it with you all semester long with relevant study solutions, step-by-step support, and real experts. High School Biology. Mitotic index is a measurement to Growth in an organism is carefully controlled by regulating the cell cycle. First, cells replicate their DNA in S phase and then undergo mitosis which, under normal conditions, leads to complete cell division. 2 4 6 7. Qualitative observations and raw mitotic cell count data from microscope images of onion May 24, 2016 · Observing Mitosis in Root Tips - A level biology required practical activity. Spread the loveIntroduction The mitotic index is a vital parameter used to measure the proliferation of cells in a given sample. The figure above is a diagrammatic illustration of a microscope field showing the mitotic cell division in onion root cells. aaoiyan sheuvj wcon ruted dwhb rgyrbw kuzahh qhdhlf hncon ypv