'Metaphase plate' diaporamas de présentation

Slides cover Meiosis and Mendelian/ Nonmendelian outlines

Slides cover Meiosis and Mendelian/ Nonmendelian outlines . Interphase. MITOSIS. MEIOSIS. Chiasma (site of crossing over). Parent cell (before chromosome replication). MEIOSIS I. Propase. Prophase I. Chromosome replication. Chromosome replication. Tetrad formed by

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Chapter 5: Cell Division

Chapter 5: Cell Division. Cell Increase and Decrease. Cell division increases the number of somatic (body) cells , and consists of: Mitosis (division of nucleus) Cytokinesis (division of cytoplasm) Apoptosis (cell death) decreases the number of cells. The cell cycle. Fig. 5.1.

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Bellwork 2-4-2014

Bellwork 2-4-2014. Look at the two different populations of organisms below: Which one is asexual and which one is sexual? Which one has variety and which once does not?. A. B. Missed work!!.

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Unit 10: C ell Division

Unit 10: C ell Division. Introduction. Bacteria replicate via binary fission. Eukaryotes replicate via a multi-stage life cycle including mitosis. Cell division includes a non-mitotic stage known as interphase, followed by mitosis and ended with cytokinesis. Interphase.

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Meiosis

Meiosis. Creation of Gametes. Asexual reproduction yields two identical organisms (with exception of mutations) Sexual reproduction merges the genes of the two parents Result: two versions of each chromosome Called homologous chromosomes Organism is diploid (2n=46)

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MEIOSIS

MEIOSIS. Meiosis. The form of cell division by which gametes, with half the number of chromosomes, are produced. Diploid (2n) ? haploid (n) Meiosis is sexual reproduction. Meiosis. SEX CELLS divide to produce gametes (sperm or egg) .

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Anatomy of the cell and cell division

Anatomy of the cell and cell division. Exercise #3 Page : #25. Introduction to cells. Cells are very smallest living units in the human body. Cells diameter is only about 0.1 mm. Microscope were invented in the 17 th century.

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MEIOSIS chapter 11 section 4

MEIOSIS chapter 11 section 4. SC SCIENCE STANDARD B-4.5 Students will demonstrate understanding of characteristics of phases of Meiosis I and II. Meiosis Vocabulary. Homologous : term used to refer to chromosomes that each have corresponding chromosome from opposite-sex parent

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Meiosis and Sexual Reproduction

Meiosis and Sexual Reproduction. Chapter 7. Meiosis. Key terms Ploidy Diploid Haploid Polyploidy Recombination Crossing over. What is Meiosis?. Meiosis is a form of cell division that halves the number of Chromosomes. Produces specialized reproductive cells called gametes or spores .

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Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle

Mitosis Click on the hyperlink above to watch a tutorial of the cell cycle. Critical Check Points in the Cell Cycle. Chromosome Duplication. Kinetochore. The Phases. Prophase. Interphase. Prometaphase. Metaphase. Cytokinesis. Telophase. Anaphase. Mitosis Tutorial.

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8.6 Cell division is a continuum of dynamic changes

8.6 Cell division is a continuum of dynamic changes. Mitosis is divided into five phases: Prophase Prometaphase Metaphase Anaphase Telophase/Cytokinesis Cytokinesis is well underway by late telophase. 0. PROPHASE. PROMETAPHASE. INTERPHASE. Chromatin. Centrosome. Fragments

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Cell division

Cell division. Cells are constantly dividing For growth and for maintenance We need cells to divide, but must maintain careful control Cancer. Telomeres. One control we have is telomeres Long cap at the end of both ends of every chromosome Each cell division shortens it a little

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Cell division

Cell division . Biology 106. Outline. - Types of cell division - Mitosis Phases of mitosis Diagram shows how mitosis works - Meiosis Phases of meiosis Diagram shows how meiosis works. Mitosis. - This type of cell division allows multicellular organism to grow and repair damage tissue.

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Mitosis

Mitosis. Biology Period: 5. Interphase;.

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Cell Division & Cell Cy c le

Cell Division & Cell Cy c le . Reproduction. Normal and cancer cells . Cell Cycle . For prokaryotes, the cell cycle is simple: the cell grows, DNA replicates, the cell divides . . Binary Fission Most prokaryotic cells divide by binary fission. Binary fission has three steps:

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Cell Division and Mitosis

Cell Division and Mitosis. The ratio of surface area to volume is a key factor that limits cell size. Organization of material in a eukaryotic cell.

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The 4 stages of m !+0$!$

START. Prophase. Metaphase. Telophase. The 4 stages of m !+0$!$. Anaphase. Prophase. The chromosomes coil. The nuclear membrane disintegrates. The spindle apparatus forms. The nucleolus disappears.

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MEIOSIS

MEIOSIS. Meiosis. n. 2n. produces haploid gametes. n. 2n. 4n. n. 2n. n. MITOSIS. 2 diploid cells. MEIOSIS. 4 haploid cells. Prophase I Homologous chromosomes pair up in tetrads. Tetrad = 4 Chromatids across. Metaphase I Tetrads line up along metaphase plate.

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CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES

Section B: Meiosis ???????? ???????. CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES. Meiosis ( Reduction Division ) ???????? ????????? R educes chromosome number from diploid to haploid :. Many steps of meiosis resemble steps in mitosis.

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