B dna replication meiosis 1 meiosis 2 fertilisation c fertilisation meiosis mitosis dna. Sister chromatids of each duplicated chromosome are and move to telophase ii. Pdf difference between metaphase 1 and 2 main difference. In this topic we will examine a second list, describe. The only difference is that each stage ends with an i to identify it is occurring during meiosis i. Meiosis 2 results in separation the sister chromatids and for this reason, it is known as equatorial division. Difference between metaphase 1 and 2 main difference metaphase 1 vs metaphase 2. There are two sets of 2 similar homologous chromosomes.
So this is all meiosis, meiosis i here, and you can see each of these cells now have a haploid number. The dna content of the cell is increasing during this phase. Meiosis i meiosis one is identical to the stages of mitosis. Meiosis, also, reduces the number of sets of chromosomes by half, so that when gametic recombination fertilization occurs the ploidy of the parents will be reestablished. Meiosis ii prophase ii unlike prophase i, the chromosomes are not duplicated. However, in some types of single celled organisms, the offspring cells sti ck together and form a. Pdf the evolution of meiosis from mitosis researchgate. Jun 01, 2016 profase ii metafase ii anafase ii telofase ii divisao celular. Meiose meiose ii a meiose ii e muito semelhante a mitose. Nov 06, 20 increase brain power, enhance intelligence, iq to improve, study music, binaural beats duration. Meiosis 3 model 2 meiosis ii two cells from meiosis i in prophase ii metaphase ii anaphase ii telophase ii 11. In meiosis i, during anaphase i, which structures separatedhomologous chromosomes or sister.
Music for body and spirit meditation music recommended for you. Please sketch in the appropriate images for each phase of meiosis. Fases da meiose i video divisao celular khan academy. Meiosis the form of cell division by which gametes, with half the number of chromosomes, are produced. Read online chapter 10 section 1 meiosis study guide answer key book pdf free download link book now. Sexual reproduction and meiosis key concept builder lesson.
Mitosis and meiosis every organism, including you, begins as a single cell. In this article we shall look at both spermatogenesis and oogenesis. Comparison of meiosis mitosis after dna replication 2 nuclear and cell divisions required to produce haploid gametes each diploid cell in meiosis produces 4 haploid cells sperm 1 haploid cell egg each diploid cell mitosis produces 2 diploid cells male and female meiosis. Stages of division ii meiosis were observed less frequently and were similar to. Download free powerpoint presentation of mitosis and meiosis which is used for giving presentation of different topics eg. Files are available under licenses specified on their description page. The process takes the form of one dna replication followed by two successive nuclear and cellular divisions meiosis i and meiosis ii. Telophase i normal, f metaphase ii with fast chromosome, g anaphase ii with. This site uses cookies to deliver our services and to show you relevant ads and presentations. Haploide voortplantingscellen zijn het product van meiose grieks meioun verminderen, namelijk meiose i en meiose ii, en een postmeiotische. Chapter 10 section 1 meiosis study guide answer key pdf. We look at the importance of meiosis, the consequences of abnormal meiosis as well as a comparison between mitosis and meiosis. Pdf on dec 30, 2007, carlos henrique and others published gametogenese. Transmissie electronen microscopie opname van een maiscel.
Prophase i, metaphase i, anaphase i, and telophase i. All structured data from the file and property namespaces is available under the creative commons cc0 license. The major difference between prophase ii and prophase i is the fact that the daughter cells have only one copy of each homologous chromosome. Name skills worksheet meiosis class date sequencing. Meiosis flash cards by biology zoology forensic science tpt. Diploid 2n haploid n meiosis is sexual reproduction.
Emanuel semelhante a mitose profase ii metafase ii anafase ii telofase ii celulas filhas haploides. Profase i prometafase i metafase i anafase i telofase i. Which of the following combinations is the correct sequence for meiosis. Meiosis ii is different from mitosis, however, because the chromatids usually are.
Pdf on mar 14, 2017, lakna panawala and others published difference between meiosis 1 and meiosis 2 find, read and cite all the research you need on researchgate. The pollen, male spores and ovules, female spores are produced in different organs, but the typical flower. In addition, we will see how the 2 types of eukaryotic cell division, mitosis and meiosis, are involved in. Meiosis produces gametes, which are haploid reproductive cells. Overview of meiosis, national institutes of health from the virtual cell biology classroom on. Het resultaat zal dus twee haploide dochtercellen zijn per moedercel. Summary content notes mitosis in mitosis you learned how the chromosomes carry the genes that hold the information for each individual. Each of the two meiotic divisions is divided into interphase, prophase, metaphase, anaphase and telophase. During the process, the chromosomes duplicate to form two identical daughter cells.
Chapter 5 the cell cycle, mitosis, and meiosis worksheets. Suppression of dna replication between meiosis i and meiosis ii. Life sciences grade 12 page 6 question 3 and question 4 answer questions 3 and 4 with reference to diagrams 1 to 4 below. According to model 2, where did each of the cells come from that started meiosis ii. Sister chromatids are still connected to each other, but thanks. Download chapter 10 section 1 meiosis study guide answer key book pdf free download link or read online here in pdf. Download sexual reproduction and meiosis key concept builder lesson 1 key concept. And in the next video, were gonna go through meiosis ii. Gametogenesis in the male is known as spermatogenesis and produces spermatozoa. Free download mitosis and meiosis powerpoint presentation. File history uploaded by ruisoares65 3 years, 6 months ago. Meiose e viabilidade polinica na familia araceae1 scielo. Meiosis is unique in that it involves two m phases with no intervening s phase. B dna replication meiosis 1 meiosis 2 fertilisation c fertilisation meiosis mitosis dna replication.
Sep 15, 2014 wie lauft meiose ab, warum findet sie statt. Each member of a pair of chromosomes is said to be homologous to its partner, that is, to have the same size, shape and function. Gametogenesis is the process whereby a haploid cell n is formed from a diploid cell 2n through meiosis and cell differentiation. Meiosis is a special type of nuclear division which segregates one copy of each homologous chromosome into each new gamete. 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. Each stage is followed by 1 or 2 indicating whether it belongs to meiosis 1 or 2. Cellcycle in eucaryotes interphase g1phase and g2phase g gap are the phase of cell growth sphase s synthesis is the phase of dna replication. Cells preparing to divide by meiosis undergo the g 1, s, and g 2 phases of interphase. Again, chromosomes condense, the nuclear envelop breaks down, and the spindle apparatus forms. Describes cell division in which the number of chromosomes is reduced by half, leading to the creation of germ cells. Prematuration of bovine oocytes with butyrolactone i reversibly arrests meiosis. Meiosis occurs only at the final division of gamete maturation. As a current student on this bumpy collegiate pathway, i stumbled upon course hero, where i can find study resources for nearly all my courses, get online help from tutors 247, and even share my old projects, papers, and lecture notes with other students.
Fertilization the fusion of a sperm and egg to form a zygote. Cells begin meiosis with a duplicate set of chromosomes, just like mitosis. Flowers structure contains the plants reproductive organs, and its function is to produce seeds. In the space provided in the figure below, write the letter of the stage of meiosis from the list that matches each stage in the figure. Another feature of the karyotype in figure 2 is the different appearances of the chromosomes. The diagrams show a single pair of homologous chromosomes in various stages of meiosis i and ii. On exit from meiosis i, cdk1 kinase is reactivated immediately. Some organisms remain a single cell their entire lives.
These study guides continue the innovative and committed attempt by the department. Biologia 1aula 14apostila 6divisao celular meiosepagina 5 2. Gametogenesis in the female is known as oogenesis and result in the formation of ova. Ministerial foreword the department of basic education has pleasure in releasing the second edition of mind the gap study guides for grade 12 learners. S e g2 e a mitose, caracterizadas pelas fases profase, metafase, anafase e. Meiosis ii is similar to a mitotic division, with each daughter cell from meiosis i being replicated, resulting in the production of four haploid cells figure 3.
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 genetic materials are duplicated and partitioned to produce two daughter cells with the same genetic component as the parent cell. Cells undergoing meiosis divide twice, resulting in 4 haploid 1n cells. Tanto a meiose i bem como a meiose ii ocorre a semelhanca da mitose 4 fases a saber. Each single celled or ganism reproduces by forming two new offspring cells. Deze twee cellen zullen zich verder delen door een deling gelijkend op mitose. Increase brain power, enhance intelligence, iq to improve, study music, binaural beats duration. Dont forget to address the two questions at the bottom. As duas celulas resultantes da meiose ii entram simultaneamente em profase ii e passam pelos quatro processos. The cell cycle, mitosis and meiosis university of leicester. Use this quiz or printable worksheet to assess what you have learned about what occurs during meiosis. Download mitosis and meiosis powerpoint presentation slides. Mitosis and meiosis indiana university bloomington. Scribd is the worlds largest social reading and publishing site. Meiose starter ligesom mitose med en interfase, hvor kromosomerne replikeres.
624 870 934 120 631 1480 1333 1160 165 1123 1200 1067 1412 782 114 1274 987 920 1420 720 1360 643 419 222 1032 1497 819 355 1108 1319 1032 926 1442 1437 767 516 751 1458 389 531 1471 1172 8 1334 329 46 363