Chromosomes reach their own poles nuclear membrane surrounds them, spindle fiber disappears, and cytokinesis follows. Understanding of mitosis and meiosis in higher secondary. Cell division mitosis,meiosis and different phases of cell cycle. Cell division is tightly controlled by complexes made of several specific proteins. Two types of cell division are encountered in the eukaryotic cell viz. One major difference between these two processes is the number of steps needed to complete cell division.
Chromosome after s phase chromosomes at beginning of mitosis after mitosis after meiosis. Hapter 10 national council of educational research and. Meiosis 2 at the beginning of the meiosis 2 dna doesnt replicate itself. Producing a new generation of cells or multicelled individuals. Cell division and mitosismeiosis flashcards quizlet. Mitosis and meiosis indiana university bloomington. Understanding of mitosis and meiosis in higher secondary students of northeast india and the implications for genetics education ansuman chattopadhyay department of zoology, visvabhatati, 731235, santiniketan. This is not the case for meiosis, which reduces the chromosome number by half. Compare and contrast mitosis and meiosis pg 275278 think. Overall, the information i provided shows how meiosis occurs and how it creates four daughter cells through cell division in the end. Cell division animations excellent animations showing the stages of mitosis, meiosis and many more key biological processes. So, this is the key difference between mitosis and meiosis. Meiosis is a specific type of cell division used only to produce sperms and oocytes.
Meiosis ii unfolds much like mitosis does, but without the chromosomes replicating before nuclear division. Studying the effects of environment on mitosis part 3. Each cell of a new generation must receive a duplicate of all the parental dna and enough cytoplasmic machinery to start up its own operation. Metaphase 2 chromosomes stands in the middle of the cell like they did in the mitosis. The cell cycle, mitosis and meiosis learning objective this learning material is about the life cycle of a cell and the series of stages by which.
Original gamete metaphase anaphase telophase cytokinesis 2. Celldivisionmitosisandmeiosispowerpointpresentationlessonp authorstream presentation. Two versions option 1 the cell cycle, mitosis and cytokinesis omits meiosis option 2 the cell cycle, mitosis, cytokinesis and meiosis includes meiosis. Mitosis in mitotic division mitosis two genetically identical daughter cells are produced from the original. In animal cells, a cleavage furrow is formed, pinching. In eukaryotes, there are two distinct types of cell division. In this lesson we take a look at mitosis revision, the process of meiosis, first meiotic division, second meiotic division, the significance of meiosis, the production of sex. Cell division is the process by which cells replicate in order to replace cell loss, repair tissue damage and reproduce the organism. Cell division usually occurs as part of a larger cell cycle. The cell cycle, mitosis and meiosis university of leicester.
The vocabulary presented here is specific to your quiz. Mitosis and meiosis vocabulary these terms relate to the production of body cells. Gametes are produced by a variation of cell division called meiosis mitosis single cell splits into two identical daughter cells, each with an exact. Find meiosis cell division diagram stock images in hd and millions of other royalty free stock photos, illustrations and vectors in the shutterstock collection. A cell cycle is a sequence of events that occurs during cell growth and division. Cell division it is the process by which a parent cell divides into two or more daughter cells. Another difference is that after the first meiotic division, the cells do not reenter interphase and dna is not replicated. Mitosis surface area to volume ratio the amount of surface covering an object or a cell compared to the volume contained within. Mitosis results in the production of two genetically identical diploid cells, whereas meiosis produces four genetically different haploid cells.
Anaphase drawing, henry grays anatomy of the human. Biology classroom teaching biology biology teacher cell biology ap biology science. Animal cell flap book students compare plant cell division and animal cell division. Whereas, meiosis produces four daughter cells from a parent cell, and the cells are not genetically identical, and they contain half of the chromosomes of the parent cell. Select using the dropdown menu in the top left corner meiosis tutorial a series of illustrations showing the stages of meiosis.
All cells in our body except for sperms and oocytes are produced as a result of mitosis. Some organisms remain a single cell their entire lives. Transfer the onion root tip into the tube containing the. Meiosis i reduces the ploidy level from 2n to n reduction while meiosis ii divides the remaining set of chromosomes in a mitosislike process division. Think think meiosis is the process in which one cell divides into four daughter cells that have half the number of chromosomes as the parent cell. Cell division is the process by which biological cells multiply. The cell cycle and development pdf free download epdf. Mitosis and meiosis every organism, including you, begins as a single cell. Meiosis occurs as a twocell division process that produces 4 daughter cells that are completely distinct from each other and from the. Because each chromosome still has two sister chromatids. Meiosis see online here according to the cell theory, new cells can be produced by the division of existing cells. A nuclear division mitosis followed by a cell division cytokinesis. The game of trashketball is an editable powerpoint template with directions.
Understanding gametes, zygotes, and haploid diploid numbers. Cell cycle and cell division notes for neet, download pdf. 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. They are both forms of cell division that follow roughly the same steps, but the goals they accomplish are completely. Department of biosciences at novum, karolinska institute, huddinge. Mitosis in mitotic division mitosis two genetically identical daughter cells are produced from. The astonishing flexibility of cell division mechanisms in early mammalian development chapter pdf available in current topics in developmental biology 120 june 2016. Meiosis cell division biology article khan academy. Each single celled or ganism reproduces by forming two new offspring cells. Cell division, perhaps the most important is among the most difficult topics in biology to teach. Meiosis accordion book students use colored pencils to sketch the phases of meiosis i and meiosis ii in this accordion book. Meiosis germ cell division haploid reductive division generates haploid gametes egg, sperm each genetically distinct from parent genetic recombination prophase 1 exchanges portions of chromosomes maternalpaternal homologous pairs independent assortment of paternal chromosomes meiosis 1 cell birth mitosis and meiosis 1st cell division. Both mitosis and meiosis are vital for living organisms in terms of growth in size, cell repairment, and production of offsprings, but they differ in some points such as ploidy and division formation. Spindle fiber occurs and it attaches chramatids kinectochores.
Sperms and oocytes carry only one copy of each chromosome. A key difference between meiosis and mitosis is that in meiosis during anaphase i, the sister chromatids are still tog ether whereas in mitosis, they separate. Obviously we studied more terms than this throughout our lectures and labs mitosis meiosis meiosis 1 meiosis 2 prophase prophase 1 prophase 2 synapsis independent assortment. Mitosis and meiosis cell division interactive notebook. Mitosis involves a complex series of changes in the nuclei of body cells that produce identical. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The cell cycle is divided into two phasesinterphase, and. In metaphase 1 of meiosis, bivalents orient at the metaphase plate and homologous are paired. Each duplicated chromosome left over from meiosis i lines up at the two cells equators and these sister chromatids as the duplicates are called separate and move to opposite poles. Mitosis and meiosis cell division interactive notebook by. In meiosis homologous chromosomes pair allows crossing over of genetic material, but homologous do not pair in mitosis. Difference between mitosis and meiosis compare the. Cell division free download as powerpoint presentation. The novartis foundation is an internatondscientific and educational charity uk registered charity no.
Interphasephase between two successive cell division g 1 phase first gap phase lasts about rd time of the complete cell cycle. Meiosis can be considered as two cell divisions known as meiosis i and meiosis ii, each of which can be considered as having prophase, metaphase, anaphase and telophase stages as in mitosis. New cells are formed by karyokinesis the process in cell division that involves replication of the cell s nucleus and cytokinesis the process in cell division that involves division of the cytoplasm. Cell division cell division is the process by which cells replicate in order to replace cell loss, repair tissue damage and reproduce the organism. Most of the differences between the processes occur during meiosis i. Download as ppt, pdf, txt or read online from scribd. Each cell division produces two new daughter cells with the same number and kind of. Celldivisionmitosisandmeiosispowerpointpresentation. If i had more background information on meiosis, this part of the lab would be a lot better. Meiosis cell division diagram stock illustration 8353486.
Mitosis involves a single division producing two daughter cells that are similar to the parent cell. However, in some types of single celled organisms, the offspring cells sti ck together and form a. Mitosis is a form of asexual reproduction, whereas meiosis is an early step in sexual reproduction. The period between mitotic divisions that is, g1, s and g2 is known as interphase. Furthermore, a significant difference between mitosis and meiosis is that the mitosis has only one cell division. Meiosis occurs only at the final division of gamete maturation. Cell division is the process by which a parent cell divides into two or more daughter cells.