Learn about the process of meiosis, how it is used to create gametes that can combine to form a zygote offspring. Meiosis does the same thing as mitosis, except that it is not exactly the same combination of genes on each chromosome. Watch the mitosis animation video or flash presentation. There are two types of cell division in eukaryotes. At the end of meiosis ii, each of the 2 cells divides, leaving u with 4 cells, and thus 23 chromosomes each. During meiosis ii, the cohesion between sister chromatids is released and they.
It is a process that only occurs during the formation of sex cells. You may take pictures or video tape to record this. Student generated drawings of the process of mitosis. Appropriate labels for each stage including but not limited to. Discover critical differences between mitosis and meiosis, and possible misunderstandings about the two processes, by showing key movie frames of the key stages in each process on your desk. Create a flip book showing the stages of meiosis use the meiosis flip book papers to draw and color the stages. Gametes are produced by two meiotic cell divisions. It is important for students to differentiate between the two cell processes mitosis vs. Meiosis occurs in the sex organs, producing gametessperm and eggs.
Meiosis in your textbook, read about mitosis and meiosis in section 22. How many cell form at the end of meiosis 2 and how. During meiosis ii, the sister chromatids within the two daughter cells separate, forming four new haploid gametes. Although it is traditionally called prophase, it actually resembles the g 2 phase of a mitotic cell division. These cells are haploidhave just one chromosome from each homologue pairbut their chromosomes still consist of two sister chromatids. Occurs in plant and animal cells happens in both meiosis and mitosis 4. Mitosis and meiosis details the wide variety of methods currently used to study how cells divide as yeast and insect spermatocytes, higher plants, and sea urchin zygotes. In the gametes, a different form of cell division occurs called meiosis. Involves cellular division happens in both meiosis and mitosis 6. In this stage the chromatids line up in the center of the cell, and the spindle fibres attach to the chromatids. A meiosis flip book i put together for an assignment grade. This big cell divides into 2 identical new cells so each has 6 chromosomes 2n like the original. Materials meiosis flip book templates scissors colored pencils stapler procedure 1. The term is used so long as the centromeres remain in contact.
As a consequence of recombination and segregation of maternal and paternal sets of chromosomes, it represents the largest natural source of genetic variability. If homologous chromosomes fail to separate during meiosis i, the result is two gametes that lack that chromosome and two gametes with two copies of the chromosome. Meiosis and sexual reproduction interactive flip book and. Notes on introduction to meiosis notes on the divisions of meiosis notes on the importance of meiosis notes on the ultrastructure of meiosis. Fertilization is the fusion of a sperm and egg cell. Starts with 46 chromosomes in humans and forms haploid cells of 23 chromosomes. The events of meiosis i and meiosis 2 in fine detail please use 3 homologous chromosomes tetrads when you begin your drawings for prophase i the use of color to distinguish homologous chromosomes. Complete the cl by answering the questions beside the diagrams. The highlighted phrases are for meiosis and the ones underlined are for mitosis. If sister chromatids fail to separate during meiosis ii, the result is one gamete that.
Includes powerpoint presentation and is intended for biology students. Meiosis has been studied at the cytological, genetic, molecular and cellular levels. Afterward, click next and answer all eleven of the tutorial questions. When you flip the flip book you should be able to see chromosomes moving slowly, centrioles moving and forming spindle fibres out of microtubules, parts of the cell appearing and disappearing and the cell splitting into 2 and finally 4 four haploid cells. Meiosis molecular mechanisms and cytogenetic diversity. These cells are haploidhave just one chromosome from each homologue pair but their chromosomes still consist of two sister chromatids. Meiosis is a special type of cell division in sexuallyreproducing organisms used to produce the. In this stage the chromatids connect and cross over, this is when the chromatids trade sections.
For the love of physics walter lewin may 16, 2011 duration. Explaining mitosis and meiosis kindle edition by clark, jonathan. Create an animated movie showing the cycles of meiosis using clay. Download it once and read it on your kindle device, pc, phones or tablets. Use features like bookmarks, note taking and highlighting while reading biology. Mitosis and meiosis flip book pages 1 22 text version.
By agreement with the publisher, this book is accessible by the search feature, but. Meiosis is called cell reduction because there is a reduction decrease in the number of chromosomes from the original parent cell. It was my first time of making a flipbook hope you guys like it. Jan 03, 2008 mitosis starts with a 2n diploid cell that has 6 chromosomes, each chromosome is reproduced to create a total of 12. The book discusses meiosis with regard to the meiotic behavior of chromosomes. One or more of the phases is missing a stage so that the book does not flip cohesively 3930 points. Meiosis and mitosis covers chapters on meiosis and mitosis.
This book is distributed under the terms of the creative commons attribution 4. With chapters covering micromanipulation of chromosomes and making, expressing, and imaging gfpfusion proteins, this volume contains stateoftheart how to secrets that. Telophase 2 and cytokinesis 2 during these stages, the chromosomes are separated and new nuclear membranes form, then the cytoplasm splits around these new nuclei, forming four haploid daughter cells. Meiosis molecular biology of the cell ncbi bookshelf. When they separate during anaphase of mitosis and anaphase 2 of meiosis, the strands are called sister chromatids. Illustrate the movement of chromosomes during meiosis. Meiosis ends with two successive cell divisions without dna replication. Prophase i can occupy 90% or more of the time taken by meiosis. This process involves two cell transitions, the transition from prophase to the first meiotic division meiosis i and the unique meiosis i to meiosis ii. Meiosis flipbook socorro independent school district. Study meiosis mitosis flashcards at proprofs college level bio talking about the process of cell division.
Meiosis flip book student activity sheet introduction during this activity, you will utilize your knowledge of meiosis to design and create a flip book outlining the stages of meiosis. The picture depicts what phase of meiosis propase 1 prophase 2 anaphase 1 anaphase 2. Meiosis cliffsnotes study guides book summaries, test. Studies in model systems have revealed common underlying mechanisms while in parallel, studies in diverse organisms have revealed the incredible variation in meiotic mechanisms. One among the two identical copies of dna making up a replicated chromosome, which are joined at their centromeres, for the process of cell division mitosis or meiosis. Meiosis i is followed by meiosis ii, which resembles mitosis in that the sister. Likewise, meiosis ii during which the second round of meiotic division takes place includes prophase ii, prometaphase ii, and so on. Materials 2 handout sheets lead pencil 2 contrastingcolor pencils scissors paper punch paper fasteners procedures and observations each species has a characteristic number of chromosomes. Meiosis is a key event in the life of all sexually reproductive organisms.
Meiosis ii segregates the sister chromatids into separate cells. Meiosis, a twostep process of cell division that is used to make gametes sex. Meiosis cell division biology article khan academy. Meiosis introduction 1st tab middle similar to mitosis ipmatc meiosis involves two distinct divisions, called meiosis i and meiosis ii by the end of meiosis ii, the 1 diploid cell that entered meiosis has become 4 haploid cells the next slide has a labeled picture for you to draw meiosis introduction 1st tab bottom half. Note that meiosis has also reassorted the chromosomes into new groupings. Stages of meiosis crossing over independent assortment spermatogenesis oogenesis.
As in mitosis, each part of meiosis has four phases which include. Obtain the meiosis flip book templates from your teacher. Jan 18, 2017 flip book compilation by pro animators duration. Each chromosome, however, still has its duplicated sister chromatid attached. Meiosis i prophase i, metaphase i, anaphase i and telophase i, and meiosis ii prophase ii, metaphase ii, anaphase ii and telophase ii, and product of meiosis b. Meiosis flip book introduction in this activity, students will create a flip book that outlines the stages of meiosis. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
In meiosis ii, a cell contains a single set of chromosomes. There are few stages for each of the phases of meiosis 2920 points. Meiosis ii is the second major subdivision of meiosis. Prior to this activity, outline the process of meiosis via lecture or class discussion. The chart below shows the steps of mitosis and meiosis in the correct order. This process is why meiosis is responsible for the creation of new genetic combinations and an increase genetic variations in the resulting offspring. Pass out the meiosis flip student activity sheet and templates. At the end of meiosis will there be 2 or 4 gametes.
Meiosis and sexual reproduction interactive flip book and quiz includes. Meiosis, the process of forming gametes in preparation for sexual reproduction, has long been a focus of intense study. Skeleton note student version and teacher key with color coded notes and detailed diagrams instructions on how to create your flip book detailed descriptions of. By agreement with the publisher, this book is accessible by the search feature, but cannot be browsed. Meiosis is a process in which one diploid cell divides and makes four haploid cells. Two successive nuclear divisions occur, meiosis i reduction and meiosis ii division. Mar 07, 2014 meiosis is a process that converts diploid nuclei to haploid nuclei. Feb 07, 2018 a meiosis flip book i put together for an assignment grade. In humans, in which there are 23 different chromosome pairs, there can be 2 23 nearly 10 million different types of haploid cells formed from the genome of a single person. Jan 01, 2010 all about mitosis and meiosis mission. Ninth grade lesson flipping for meiosis betterlesson. Nondisjunction can occur during either meiosis i or ii, with different results figure 7.
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