PPT-Sexual reproduction and meiosis

Chapter 11 Genes and Development Fig 111 Copyright The McGrawHill Companies Inc Permission required for reproduction or display Haploid sperm Haploid egg Diploid zygote Fertilization. Meiosis. Meiosis is the cell division which produces the . sex cells . or . gametes. .. Meiosis occurs in the cells of the . reproductive organs. :. Sperm cells – testes. Ova (eggs) – ovaries. Pollen - anthers. Sexual Life Cycles. modes of reproduction. diploid/haploid and meiosis. meiosis I and meiosis II phases. key differences between mitosis and meiosis. variation in position of meiosis in life cycles. why sex?. Chapter 8. Asexual vs. Sexual reproduction. Asexual reproduction – new organisms/cells are genetically identical to parent cells/organisms . Sexual reproduction – offspring have a combination of genes from both parents. . ch. : 7. Sexual or Asexual. Asexual – involves a single parent organism and produces off-spring or daughter cells that are clones. Sexual Reproduction – involves genetic contribution in the form of gametes from two sources. Mrs. Stewart. Biology I . Stewarts Creek High School. Objectives:. Differentiate between the process of mitosis and meiosis. Demonstrate the movement of chromosomes throughout meiosis. Analyze how meiosis leads to genetic variation. 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.. Key Concepts:. What happens during the process of meiosis?. How is meiosis different from mitosis?. Types of . Reproduction. Section 11-4. ASEXUAL. SEXUAL. 1. One Parent. 2. Binary fission (in prokaryotes) or mitosis in (eukaryotes).. Asexual reproduction: Overview. Example #1: . Garlic (. Allium sativum. ) . “As far as we know, garlic in cultivation throughout history has only been propagated asexually by way of vegetative cloves, bulbs, and bulbils (or topsets), not from seed. These asexually propagated, genetically distinct selections of garlic we cultivate are more generally called "clones". Yet this asexual lifestyle of cultivated garlic forgoes the possibility of combining traits proffered by interpollinating diverse parental stocks.”. Meiosis is the. . type of . cell division by which . germ cells . (eggs and sperm) . are produced. . One parent cell produces . four . daughter cells. . Daughter cells have half the number of chromosomes found in the parent cell. Cell division / Asexual reproduction. Mitosis. produce cells with same information. identical daughter cells. exact copies. clones. same amount of DNA . same number of chromosomes. same genetic information. Let’s Review!. The cell cycle is when . a cell makes a copy of itself . for:. Growth, Repair, Replacement. BODY (autosomal/somatic) cells reproduce . by . mitosis. s. ome . organisms . do also, . but we will talk about that . Unit 2: Organisms and Evolution. Advanced Higher Biology. Miss A Aitken. Costs and Benefits. Two forms of reproduction:. Sexual Reproduction. Asexual Reproduction. Why do both forms exist?. They must exist because neither one is perfect for all situations. If it was perfect, only one would exist.. This fusion of gametes is called fertilisation. . Sexual reproduction allows some of the genetic information from each parent to mix, producing offspring that resemble their parents, but are not identical to them. In this way, sexual reproduction leads to variety in the offspring. Animals and plants can reproduce using sexual reproduction.. Defined. : Gametes from two separate parents unite. Meiosis: Diploid (2n) to haploid (n) cells . Mechanism that allows for . genetic diversity. Many eukaryotes reproduce in this manner. Plants, animals and fungi.