Asexual reprod

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Asexual reprod

  1. 1. How do cells make new cells? <ul><li>Do You know: </li></ul><ul><li>What happens when you cut a worm in half? </li></ul><ul><li>Why do you think you can grow new skin over a cut on you hand but you can’t grow new fingers? </li></ul>
  2. 2. What is reproduction? <ul><li>Reproduction is the process by which </li></ul><ul><li>organisms produce more of their own kind. </li></ul><ul><li>Think about it – Without reproduction, all life on earth would no longer exist. </li></ul>
  3. 3. What is Asexual Reproduction? <ul><li>Only one parent is involved. </li></ul><ul><li>Offspring are genetically identical to their parents. </li></ul><ul><li>All cells that come from a single cell are genetically identical to it and to each other; they are all clones. </li></ul>
  4. 4. <ul><li>Mitosis - is the exact duplication of the nucleus of a cell so as to form two identical nuclei during cell division. </li></ul>Types of Division during Asexual Reproduction
  5. 5. <ul><li>Binary Fission – </li></ul><ul><li>Many, but not all, single-celled organisms (unicellular), such as bacteria , and protists , reproduce asexually through binary fission . </li></ul>Types of division during Asexual Reproduction
  6. 6. <ul><li>Such Protists include, amoeba’s and paramecium. </li></ul><ul><li>The nucleus divides by mitosis and the cytoplasm divides, forming 2 new daughter cells of equal size. </li></ul>Binary Fission
  7. 8. Types of Asexual Reproduction <ul><li>Budding </li></ul><ul><li>Some cells split via budding (for example baker's yeast), </li></ul><ul><ul><li>The buds grow into fully matured individuals which eventually break away from the parent animal </li></ul></ul>
  8. 9. <ul><li>Seen Mostly in Marine Animals and Yeast </li></ul><ul><ul><li>Examples Include; Sponges, Corals and Jellyfish… </li></ul></ul>
  9. 11. Budding in Hydra
  10. 12. <ul><li>Vegetative Propagation – </li></ul><ul><li>found in plants where new independent individuals are formed without the production of seeds or spores </li></ul><ul><li>Example – fragmentation, where small fragments of the plant develop into a new plant </li></ul>Types of Asexual Reproduction

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