PPT-CELL DIVISION: MEIOSIS AND SEXUAL REPRODUCTION

Organisms that reproduce sexually are generally diploid each cell contains two sets of chromosomesa maternal chromosome set and a paternal chromosome setone inherited from each parent Google Images. Chapter . 11. Genes and Development. Fig. 11.1. Copyright © The McGraw-Hill 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. LECA=last eukaryotic common ancestor as distinct from LUCA (last universal com. . a. nc.). Probably had the ability to reproduce sexually…how do we know this??. Transition to a sexual LECA involved 4 and we will focus on 3 “transitions. Chapter 10. Overview of Meiosis. 10.1. Overview of Meiosis. Meiosis. - type of nuclear division that reduces the chromosome number from the diploid number to the haploid number.. Gametes. - reproductive cells. 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. Review of Mitosis. Mitosis is a form of . asexual reproduction. This means that it . only requires 1 organism . (ex. Skin cells dividing). For growth and repair in . somatic. (body) cells!. Results in 2 cells identical to the original (parent) cell. Where do you come from?. Sex: . Woman, XX. . Man, XY. Gender: Female Male. . Egg, Ovum Sperm. Fertilization – union of sperm an egg to produce zygote . 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. 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. In asexual reproduction, a single individual gives rise to offspring that are identical to itself and . others [MITOSIS]. Bacteria reproduce asexually. Most plants and some simple animals can reproduce both asexually and .