PPT-MEIOSIS Reduction-Division

Genetic Recombination 1 Meiosis Mitosis asexual reproduction Meiosis sexual reproduction Mitosis 2 identical cells Meiosis 4 unique sex cells spermeggs 2 Meiosis The form of . Organisms that reproduce sexually have specialized cells called gametes (sex cells). Gametes are the result of a type of cell division called meiosis. Diploid and haploid. Almost all human cells are . Homologous chromosomes . – identical chromosomes. . …same length, . centromere. , same staining pattern. . …exception…males sex chromosome. 1-22 . autosomes. . sex . chromsomes. Homologous chromosomes. Chapter 12. Outline. Introduction. Asexual. Sexual Reproduction. The Phases of Meiosis. Division I. Division II. Alternation . of Generations. Introduction. Asexual . Reproduction . - . p. roduction . Sexual Life Cycles. Which of the following transmits genes from both parents to child, or from one generation of a family to another?. DNA. gametes. somatic cells. mitosis. nucleotides. Which of the following transmits genes from both parents to child, or from one generation of a family to another?. Part 1. Meiosis. Types of Cell Division. There are two types of normal cell division – mitosis and meiosis. . Both . types of cell division take place in eukaryotic . organisms. . Mitosis . is cell division which begins in . Meiosis Terms . to Know:. Meiosis. : Cell division that produces gametes (sex cells/sperm & egg). These cells are used for sexual reproduction. They have . half . the number of chromosomes as the parent cell.. Gamete vs. Zygote. What is a Gamete?. Egg & Sperm . What is a Zygote?. When two gametes come together (fertilization). Why your body can . not. use mitosis to make sperm or eggs?. A typical cell in your body has 46 chromosomes (23 pairs of homologous chromosomes). Suppose that human sperm and eggs were produced by mitosis. How many chromosomes would each sperm or egg have?. Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings. Cell Cycle. 3. A . life cycle. of an organism is the generation-to-generation sequence of stages in its reproductive history.. Organisms that reproduce sexually are generally diploid: each cell contains two sets of chromosomes—a maternal chromosome set and a paternal chromosome set—one inherited from each parent. . . Google Images. INTERPHASE – G . FUNCTION. This . is the part of the cell cycle (and first part of interphase) where the cell is increasing in size (by synthesizing cytoplasmic components). It contains one copy of each chromosome in this stage (or 23 pairs of homologous chromosomes). . Good progress:. Describe how sexual. reproduction results in genetic variation. Draw diagrams to explain how gametes are formed in meiosis. . Outstanding progress:. Explain the number of chromosomes in the gametes during meiosis and fertilisation. . 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 Acknowledgement. I would like to express special thank of gratitude to our respected principal madam, Mrs. . Kuljit. . Kaur. , for giving us this unique opportunity to express ourselves in a creative way. Unicellular organisms. cell division = reproduction. Multicellular organisms. cell div. needed for development. & for reproduction (meiosis). Mitosis gives each cell. complete set of genetic material.