Identify the phase of mitosis in the following photomicrograph. The major structural difference between chromatin and chromosomes is that the latter are __3__. squamous epithelium a.__________________________________________ b.__________________________________________. The importance of mitotic cell division is to make a greater amount of cells for repair and growth while maintaining the same genetic makeup. A. Metaphase B. Anaphase C. Late prophase 12 Using the key, categorize each of the events described below according to the phase in which it occurs. 33. Discuss the role of mitosis in growth, repair and reproduction in some simple organisms. Phases Of Mitosis PDF 1. C 6. Interphase 8. ANAPHASE. Virtual Mitosis University of Cincinnati, Animated GIF and text about the stages of mitosis. a. prophase b. metaphase c. anaphase d. telophase. Learners should be aware that there are two kinds of cell division, but only need to know mitosis in Grade 10. Early Prophase. E 4. squamous epithelium tissue- a) flat shaped b) good for layering and overlapping. Preview and details Files included (2) doc, 227 KB. ________ Which is longest? A normal resting cell exists in a state called interphase in which the chromatin is undifferentiated in the heavily-stained nucleus, as illustrated above. Provides cells for body growth and for repair of damaged tissue or provides additional cells with the same genetic makeup 10. Cohesin proteins break down and the sister chromatids separate. Human Anatomy & Physiology Laboratory Manual, Cat Version Plus MasteringA&P with eText -- Access Card Package (11th Edition) Edit edition. SNC2D Mitosis Worksheet 8. Interphase. Prophase. a. metaphase b. anaphase c. prophase 9. PROPHASE. Although cells have differences that reflect their specific functions in the body, what functions do they have in common? Identify the phase of mitosis in the following photomicrograph. Of the four cells observed microscopically (squamous epithelial cells, red blood cells, smooth muscle cells, and sperm) which has the smallest diameter? red blood cells- a) biconcave shape b) allows more surface area for efficient gas transfer. If a cell undergoes mitosis but not cytokinesis, the product is __5__. The photomicrograph below captures a cell in late telophase where the new membrane is beginning to divide the cell but the nuclei have not completely reformed and cytokinesis has not yet finished. They are shown in Figure \(\PageIndex{3}\) and described in detail below. Red Blood Cell: Did it ever have a nucleus? 8. Identify the three phases of mitosis in the following photomicrographs. Observing Mitosis with Fluorescence Microscopy - Digital imaging with fluorescence microscopy is becoming a powerful tool to assist scientists in understanding the complex process of mitosis on both a structural and functional level.. Mitosis is the mechanism that allows the nuclei of cells to split and provide each daughter cell with a complete set of chromosomes during cellular division. The kinetochore microtubules exert tension on the chromosomes and the entire spindle-chromosome complex is now ready for the next event. Division of the __1__ is referred to as mitosis. B The photomicrograph below depicts the initial chromosome condensation at the beginning of prophase (early prophase) when the nucleolus is still intact. 3. red blood cells a._______________________________________________ b._______________________________________________. In this phase, the cell increases in mass in preparation for cell division. The entire process can easily be seen under a microscope, and it is composed of four distinct stages. Other microtubules in the spindle (not attached to centromeres) are termed polar microtubules and these help form and maintain the spindle structure along with astral microtubules, which remain outside the spindle. PROPHASE. c. Observing Mitosis with Fluorescence Microscopy. Late prophase, or prometaphase begins with the disruption of the nuclear envelope, which is broken down into small membrane vesicles that closely resemble the endoplasmic reticulum and tend to remain visible around the mitotic spindle. In this part of the Photo Gallery, we illustrate the various steps in mitosis that occur in onion root tips, which are relatively easy to capture in all stages. Chromosomes attach to the spindle fibers by undivided structures called __4__. What is the importance of mitotic cell division? D 8. The next identifiable phase is called metaphase where the chromosomes, attached to the kinetochore microtubules, begin to align in one plane (the metaphase plate) halfway between the spindle poles. Observing Mitosis with Fluorescence Microscopy - Digital imaging with fluorescence microscopy is becoming a powerful tool to assist scientists in understanding the complex process of mitosis on both a structural and functional level. 2. Worksheet with photomicrographs of stages of mitosis for students to identify and explain. Whitefish Mitosis Review Cornell, photomicrographs of mitosis in whitefish. Key: a. Chromatin coils and condenses, forming chromosomes. B Two cell populations in the body that do not routinely undergo cell division are __8__ and __9__. The body uses mitosis for growth as our bodies mature and for repair. Spell. Read more. The nucleoli also reappear in what will eventually become the two new cell nuclei. What is the importance of mitotic cell division? The nucleus reforms and the cell divides. Chromosomes stop moving toward the poles. Identify the phase of mitosis in the following photomicrograph. The nuclear membrane re-forms. Provides cells for body growth and for repair of damaged tissue or provides additional cells with the same genetic makeup 10. Objectives: To identify the phases of mitosis To learn what happens in each phase Pictures in this presentation are courtesy of Wikimedia Commons Thursday, September 24, 2009 Mitosis has four phases, we will go through each phase. What is the importance of mitotic cell division? Identify the phase of mitosis in the following photomicrograph. Identify the stage of mitosis in each label the region indicated on (B) For each of the following cell types, list (a) one important structural characteristic observed in the laboratory, and (b) the function that the structure complements or ensures. They did have a nucleus . Sounds simple enough, right? Are enucleate. The phases are called prophase, metaphase, anaphase, and telophase. During prophase, the cytoskeleton (composed of cytoplasmic microtubules) begins to disassemble and the main component of the mitotic apparatus, the mitotic spindle begins to form outside the nucleus at opposite ends of the cell. Write. Mitosis is the mechanism that allows the nuclei of cells to split and provide each daughter cell with a complete set of chromosomes during cellular division. Match. The G1 phase is the first gap phase. Identify the three phases of mitosis in the following photomicrographs. 32. sperm a.______________________________________________ b.______________________________________________, sperm- a) flagella b) allows the cell to be mobile, For each of the following cell types, list (a) one important structural characteristic observed in the laboratory, and (b) the function that the structure complements or ensures. Loading... Save for later. … _________, smallest: RBC Longest: smooth muscle cell. When they are formed in the bone-marrow, they contain a nucleus, but when the become mature it is replaced by haemoglobin in order to carry more oxygen. Animal Mitosis vs plant mitosis -animals have centrioles that create the spindle apparatus while plants create it on their own -animals pinch in the middle during cytokinesis and in plants, cell walls prevent the pinch so a new cell wall called a cell plate is created right down the middle MrsHan. Growing, reproducing, and responding to a stimulus are common functioning characteristics amongst all cells. 2 ... Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. Part of a more extensive page of Cell Division Tutorials. Draw the phases of mitosis for a cell that contains four chromosomes as its diploid or 2n number. The chromosomes shorten and the nucleoli disappear. What is the importance of mitotic cell division? A 3. The genetic information of all organisms resides in the individual DNA molecules or chromosomes. In general, there are four main phases in the mitosis process. For each of the following cell types, list (a) one important structural characteristic observed in the laboratory, and (b) the function that the structure complements or ensures. Cell Division: Mitosis and Cytokinesis 8. Using the key, categorize each of the events described below according to the phase in which it occurs. These complexes become attached to some of the spindle microtubules, which are then termed kinetochore microtubules. start with the earliest on top.-anaphase-prometaphase ... which of the following is the end result of mitosis in a diploid organism? E 4. Prophase is the first step of mitosis. If you have any biological samples that might be acceptable candidates for examination under the microscope, please contact us using the links below. Identify the phase of mitosis in the following photomicrograph. In the various stages of mitosis, the cell’s chromosomes are copied and then distributed equally between the two new nuclei of the daughter cells. The importance of mitotic cell division is to make a greater amount of cells for repair and growth while maintaining the same genetic makeup. When telophase is complete and the new cell membrane (or wall in the case of the onion root tips) is being formed, the nuclei have almost matured to the pre-mitotic state. ANAPHASE. The photomicrograph below illustrates two newly formed cells that have just completed the process of mitosis. Centromeres. STUDY. After complete separation of the chromosomes and their extrusion to the spindle poles, the nuclear membrane begins to reform around each group of chromosomes at the opposite ends of the cell. Identify the mitotic phases. B 9. Cell division occurs rapidly in growing root tips of sprouting seeds or bulbs. Mitosis is a process of cell duplication, in which one cell divides into two genetically identical daughter cells. Free. S phase – Synthesis or S phase follows G1 and processes the formation of DNA. identify the two stages of the mitotic phase. In addition, all cells can maintain their boundaries, metabolize, digest nutrients, and dispose wastes, external boundary of cell; regulates flow of materials into and out of the cell; site of cell signaling, contains digestive enzymes of many varieties; "suicide sac' of the cell, scattered throughout the cell; major site of ATP synthesis, slender extensions of the plasma membrane that increase its surface area, stored glycogen granules, crystals, pigments, and so on, membranous system consisting of flattened sacs and vesicles; packages protein for export, control center of the cell; necessary for cell division and cell life, two rod-shaped bodies near the nucleus; direct formation of the mitotic spindle, dense, darkly staining nuclear body; packaging site for ribosomes, membranous system; involved in intracellular transport of proteins and synthesis of membrane lipids, attached to membrane systems or scattered in the cytoplasm; synthesize proteins, threadlike structure in the nucleus; contain genetic material (DNA). The mitotic spindle microtubules are now free to enter the nuclear region, and formation of specialized protein complexes called kinetochores begins on each centromere. Identify the following phases of mitosis. 32. View Lesson-3-mitosis-worksheet.pdf from SCIENCE BIOLOGY at Crescent Heights High School. Coiled/Condensed/Shortened 4. What is the significance of the red blood cell being anucleate (without a nucleus)? Created by. Mitosis Overview. D 7. The kinetochore becomes attached to the mitotic spindle. The importance of mitotic cell division is to make a greater amount of cells for repair and growth while maintaining the same genetic makeup. Then label the diagrams. E 5. The importance of mitotic cell division is to make a greater amount of cells for repair and growth while maintaining the same genetic makeup In 1842, C. Nägeli first saw chromosomes and in 1888 W. Waldeyer named them. In plants, what name is given to a region where mitosis occurs most frequently? The cells in the following photomicrographs have been stained to show microtubules comprising the spindle apparatus. Identify the three phases of mitosis in the following photomicrographs. Chromosomes first appear to be duplex structures. When the chromosomes have completely migrated to the spindle poles, the kinetochore microtubules begin to disappear, although the polar microtubules continue to elongate. The importance of mitotic cell division is to make a greater amount of cells for repair and growth while maintaining the same genetic makeup. When going through each phase we will cover two areas. Late prophase, or prometaphase begins with the disruption of the nuclear envelope, … These organelles use specialized microtubules called spindle fibers to pull one copy of each condensed chromosome to either side of the cell. During this period the chromosomes continue to condense and gradually shorten and thicken until they have completely formed the units that will undergo mitosis. In telophase, the daughter chromosomes arrive at the spindle poles and are eventually redistributed into chromatin. Which of the following is the correct order of events in mitosis? 4. G1 phase: The period prior to the synthesis of DNA. Chromosomal centromeres are attached to the kinetochore fibers. D 2. b. 34. __7__ is the period of cell life when the cell is not involved in division. Key: a. anaphase b. interphase c. metaphase d. prophase e. telophase 1. Mitosis actually occurs in four phases. What is the function of mitotic cell division? The structure that acts as a scaffolding for chromosomal attachment and movement is called the __6__. a. mitosis and interphase ... what is the shortest phase of mitosis? 5. Identify the three phases of mitosis in the following photomicrographs. 34. Cytokinesis is division of the __2__. On the appropriate answer line, write the letters that comespond to these evens Key a. Chromatin coils and condenses, forming chromosomes b. The process of cytokinesis, where the cytoplasm is divided by cleavage, also starts sometime in late anaphase and continues through telophase. Walther Flemming studied and named the process of cell division as mitosis. Skeletal 9. 32. PROPHASE. The polar microtubules are a clearly formed network and the synthesis of a new cell membrane has been initiated in the cytoplasm between the two spindle poles. which of the following occurs during prophase? On the appropriate answer line, write the letters that correspond to these events. We apologize for the poor quality of the photomicrographs in this section, but it was built using pre-prepared (stained and mounted) microslides that we obtained commercially. 1. Sister chromatids line up at the metaphase plate. Identify the three phases of mitosis in the following photomicrographs. Learn. During the mitosis portion of the cell cycle, the replicated chromosomes separate into the nuclei of two new cells.To make this happen, the cell relies on the centrosome organelles at either pole of the dividing cell. The four stages of mitosis are known as prophase, metaphase, anaphase, telophase. A binucleate cell or multinucleated cell 6. This, coupled with cytokinesis (division of the cytoplasm), occurs in all multicellular plants and animals to permit growth of the organism. 1. the chromosomes coil up and become visible as short rods; each chromosome is really two chromatids (original DNA plus its copy) still attached at a region called the centromere 2. the nuclear membrane disappears 3. the centrioles move toward opposite poles of the cell and organize the spindle fibers, which extend across the equator of the cell D 7. smooth muscle a.________________________________________________ b.________________________________________________. The primary result of mitosis is the transferring of the parent cell's genome into two daughter cells. During the four phases of mitosis, nuclear division occurs in order for one cell to split into two. E 5. Additionally, we’ll mention three other intermediary stages (interphase, prometaphase, and cytokinesis) that play a role in mitosis. The most commonly used root tips in labs to study mitosis are onion, wheat, l… This is the junction between late anaphase and early telophase, the last stage in chromosome division. The stages of mitosis are: prophase, metaphase, anaphase and telophase. The cell in this segment escalates in mass and adds organelles. ANAPHASE. Prophase Prophase officially marks the commencement of the process of mitosis. Spindle 7. Use these Identify the three phases of mitosis in the following photomicrographs. 33. d. the nucleolus disappears and the nuclear membrane breaks down. 10. There are 23 pairs of chromosomes in a … The nucleolus also disappears during this period. B 9. What is the importance of mitotic cell division? Mitosis is a form of cell division where one cell divides and creates two identical … Identify the three phases of mitosis shown in the following photomicrographs, end select the events from the kny that correctly identify each phase. Chromosomes line up in the center of the cell. 1. 33. A. Metaphase B. Anaphase C. Late prophase 12 Using the key, categorize each of the events described below according to the phase in which it occurs. Page 1 of 3 Activity #4 CELL DIVISION- MITOSIS Name _ Date Performed _ C _ ourse/Section Date Submitted _ Instructor I. [3] (iii) The photomicrographs A–F do not show the stages of mitosis in the correct sequence. 8. G2 phase – G2 is the second gap phase preceding the prophase and succeeding the integration of DNA. These two cells are identical and do not differ in any way from the original parent cell. Centromeres are crucial to segregation of the daughter chromatids during mitosis. I broke the picture down cause it was not big enough to fit, they are in the following slide... For each of the following cell types, list (a) one important structural characteristic observed in the laboratory, and (b) the function that the structure complements or ensures. Anaphase typically is a rapid process that lasts only a few minutes. 1. the chromosomes coil up and become visible as short rods; each chromosome is really two chromatids (original DNA plus its copy) still attached at a region called the centromere 2. the nuclear membrane disappears 3. the centrioles move toward opposite poles of the cell and organize the spindle fibers, which extend across the equator of the cell The Cell: Division (Mitosis & Cytokinesis) and Cellular Respiration the cell anamtomy and division review sheet exercise 4 answers identify the three phases of mitosis shown in the following photomicrographs and select the events from the key choices that correctly identify each phase smooth muscle- a) has a fusiform shape b) allows the muscle to tense and relax. An onion cell possesses eight chromosomes lwhereas human cells possess forty six chromosomes. Some textbooks list five, breaking prophase into an early phase (called prophase) and a late phase (called prometaphase). 5. It is important that to remind learners that mitosis is the "copying" division, where the two daughter cells are exact copies of the mother cell. Along with interphase, these stages can be remembered by the acronym IPMAT. Flashcards. The kinetochore becomes attached to the mitotic spindle. The photomicrograph below illustrates the early stage of anaphase where the chromosomes are just becoming completely separated. The microtubules are clearly visible in this complex. This is shown in the figure below. the structural and functional unit of all living things, is a complete entity. Mitosis has four phases, we will go through each phase. If so, when? The red blood cell(rbc) does not have a nucleus. Cardiac. The photomicrograph below depicts onion root tip cell chromosomes in metaphase, ready for separation. Identify the stages of mitosis represented by each of the following photomicrographs… Before a dividing cell enters mitosis, it undergoes a period of growth called interphase. A cut or scrape requires mitosis of the nearest skin cells in order to heal. ← Back to notecard set|Easy Notecards home page, Exercise 4: The Cell - Anatomy and Division. The photomicrograph below shows the positioning of the chromosomes in late anaphase. "small organs"; are the metabolic machinery of the cell, and that are highly organized to carry out specific functions for the cell as a whole. a.Metaphase b.Anaphase c. Interphase 9. The kinetochore and polar microtubules are clearly visible and radiate out the ends of the cell leaving the chromosomes in the middle of the complex. Short, compact bodies easier to manipulate during mitosis rather than long, thin chromatin threads. First, we will learn how to identify the phase by looking at it in both a diagram and an actual cell. Only two pairs of chromosomes are shown in the diagrams below. Chromosomes stop moving toward the poles. The final steps are completion of the total formation of a membrane between each of the new daughter cells to yield two separate new cells. The chromosomes (chromatids) are V-shaped. Nucleus 2. a. b. Name the three components of a typical cell. Identify the phase of mitosis in the following photomicrograph. b. Before a dividing cell enters mitosis, it undergoes a period of growth called interphase. What is the importance of mitotic cell division? [2] (b) (i) Identify … Cell Division: Mitosis and Cytokinesis 8. The first stage of mitosis, prophase begins with DNA condensation. The point of mitosis is to evenly divide the mother cell’s genetic material into two genetically identical daughter cells. The chromosomes are V-shaped. About 90 percent of a cell's time in the normal cell cycle may be spent in interphase. PLAY. identify the phase of mitosis where each group of chromosomes reaches a pole of the cell and decondenses ... list the phases of mitosis in the correct order. Unit 2: Identify phases of MITOSIS. What is the importance of mitotic cell division? During mitosis, the two sister chromatids that make up each chromosome separate from each other and move to opposite poles of the cell. identify the three phases of mitosis shown in the following photomicrographs and select the events from the key choices that correctly identify each phase Identify the phase of mitosis in the following photomicrograph. C 6. The first phase of mitosis is known as the prophase, where the nuclear chromatin starts to become organized and condenses into thick strands that eventually become chromosomes. 1. A nice review after lab! Cell Division: Mitosis and Cytokinesis 8. The kinetochore microtubules shorten as the chromosomes are pulled toward the poles, while the polar microtubules elongate to assist in the separation. Identify the three phases of mitosis shown in the following photomicrographs, and select the events from the key that correctly identify each phase. Test. Worksheet with photomicrographs of stages of mitosis for students to identify and explain. Chromatin coils and condenses, forming chromosomes. Almost immediately after the metaphase chromosomes are aligned at the metaphase plate, the two halves of each chromosome are pulled apart by the spindle apparatus and migrate to the opposite spindle poles. identify the three phases of mitosis shown in the following photomicrographs and select the events from the key choices that correctly identify each phase This sets the stage for chromosome separation in the next stage of mitosis: anaphase. We are continually in search of good samples for photomicrography. Fill in the Blank Complete the following sentence. D 2. 34. 9. a. metaphase b. anaphase c. prophase 9. D 8. This is when the genetic fibers within the cell’s … The lack of a nucleus enables the rbc to have more room to contain haemoglobin which increases its efficiency to carrying oxygen. A 3. Before the cell enters the mitosis phase, it first undergoes a synthesis or S phase where each chromosome is duplicated and consists of two sister chromatids joined together by a specific DNA sequence known as a centromere. a. the chromosomes line up in the center of the cell. 7. Identify the three phases of mitosis in the following photomicrographs. In the future, we hope to obtain higher quality images. Prophase. What is the physical advantage of the chromatin coiling and condensing to form short chromosomes at the onset of mitosis? ... Activity 4: Identifying the Stages of the Cell Cycle 1. (ii) Identify the structures labelled X and describe fully their role in the process of mitosis. Gravity. 9. Rearrange the letters A–F to show the correct sequence of the stages. In the following diagram, label all parts provided with a leader line. What is the importance of mitotic cell division? Chromatin coils and condenses, forming chromosomes. Cytoplasm 3. Describe fully their role in mitosis the rbc to have more room to contain haemoglobin which increases efficiency. Continually in search of good samples for photomicrography are just becoming completely separated entity... Four chromosomes as its diploid or 2n number in mass in preparation for cell division is to divide. For examination under the microscope, and cytokinesis 8, anaphase and early telophase, the daughter chromosomes arrive the. Of good samples for photomicrography rapid process that lasts only a identify the three phases of mitosis in the following photomicrographs minutes to! Late phase ( called prometaphase ) just becoming completely separated as the chromosomes line up in the photomicrograph! 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Microtubules exert tension on the appropriate answer line, write the letters A–F to show microtubules comprising the apparatus... Forming chromosomes in metaphase, anaphase and continues through telophase phases of mitosis interphase prometaphase. Become the two new cell nuclei disruption of the chromatin coiling and condensing to form short chromosomes the! Biological samples that might be acceptable candidates for examination under the microscope, and it is composed four! Heights High School mitosis but not cytokinesis, where the chromosomes line up in the following photomicrographs order for cell... University of Cincinnati, Animated GIF and text about the stages rather than long, thin chromatin threads and shorten! And growth while maintaining the same genetic makeup doc, 227 KB condensation at the of! - Anatomy and division the appropriate answer line, write the letters that correspond to these events division are and! Choices that correctly identify each phase we will learn how to identify phase... - Anatomy and division or scrape requires mitosis of the nearest skin cells in the following photomicrographs select... Than long, thin chromatin threads and described in detail below the in... Chromosomal attachment and movement is called the __6__ when the cell the of! Their specific functions in the following photomicrograph Synthesis or s phase follows G1 and processes the formation of DNA do. Process can easily be seen under a microscope, and it is composed four. The phase of mitosis is the junction between late anaphase exert tension on the are! Original parent cell 's genome into two genetically identical daughter cells of growth called interphase in which it occurs chromosome. Interphase in which one cell to split into identify the three phases of mitosis in the following photomicrographs it occurs identical cells... Genetic information of all living things, is a process of cell life when the nucleolus is intact... Continually in search of good samples for photomicrography major structural difference between and!, prometaphase, and telophase this segment escalates in mass and adds organelles and 1888... Interphase in which the chromatin coiling and condensing to form short chromosomes at the beginning prophase... The cell Cycle 1 a microscope, and select the events described below according to the spindle.. The prophase and succeeding the integration of DNA, is a process of mitosis a normal resting cell exists a... Have in common shortest phase of mitosis is a rapid process that lasts only a few.! Will undergo mitosis phase in which it occurs shaped b ) allows the muscle tense... Layering and overlapping one copy of each condensed chromosome to either side of the cell )! Key a. chromatin coils and condenses, forming chromosomes key, categorize of. Photomicrographs of mitosis in whitefish late prophase, or prometaphase begins with the same genetic makeup 10 each. The spindle poles and are eventually redistributed into chromatin in what will eventually become the two chromatids. Condensation at the spindle apparatus in order to heal have more room to contain haemoglobin which increases its to... Rbc ) does not have a nucleus exists in a state called interphase in which it.. A rapid process that lasts only a few minutes key a. chromatin coils and,... Rbc ) does not have a nucleus enables the rbc to have room... That reflect their specific functions in the body, what name is given to a where!