Hybrids

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Hybrids

  1. 1. Hybrids By: Ally Zeitz, Gary Courtney, Tim McGinley, Sam Barton
  2. 2. What are Hybrids? <ul><li>Synonymous with heterozygous </li></ul><ul><li>Any offspring resulting from mating of two distinctly homozygous individuals or species </li></ul><ul><li>Can be plant or animal </li></ul>
  3. 3. Why Hybrids? <ul><li>Genetic hybrids carry 2 alleles of same gene </li></ul><ul><li>Create more favorable and desirable characteristics in species </li></ul><ul><li>Can generally then reproduce with one another </li></ul><ul><li>Makes offspring with favorable characteristics. </li></ul>
  4. 4. Why Not Hybrids? <ul><li>Animals reproduced are often sterile </li></ul><ul><li>Can be a long and expensive process to create </li></ul><ul><li>Could they be harmful to humans when eaten on a regular basis? </li></ul>
  5. 5. Intra-specific <ul><li>Hybrids between different subspecies within one species of animal or plant </li></ul>
  6. 6. Inter-specific <ul><li>From completely different species </li></ul><ul><li>Found within the same genus </li></ul><ul><li>Bred through mating </li></ul><ul><li>Offspring receive characteristics from both parents </li></ul><ul><li>Hybrids are often sterile </li></ul>
  7. 7. Inter-generic <ul><li>Hybrids from different genera </li></ul><ul><li>Genera: plural of genus, a category of animals ranked below family and above species. </li></ul><ul><li>Formed from a group of species </li></ul>
  8. 8. Types of Hybrids <ul><li>Single cross: created from two regular species who can produce own offspring </li></ul><ul><li>Double cross: cross between two F1 hybrids </li></ul><ul><li>Three way: cross between one F1 parent, and one from an inbred line </li></ul><ul><li>Triple cross: crossing 2 three way hybrids </li></ul><ul><li>Population hybrids: one population is bred with another </li></ul>
  9. 9. Rules of Hybrids <ul><li>There are limitations when making hybrids </li></ul><ul><li>The hybrid must be created when organism is still unicellular to be sure that each cell has specific genes </li></ul><ul><li>Hybrid “parents” must have similar genetic structures </li></ul>
  10. 10. Animal Hybrids <ul><li>Must be manmade </li></ul><ul><li>Do not yet have a high success rate </li></ul><ul><li>Often do not make it past the first few years of life </li></ul><ul><li>Can still differ greatly from other hybrids made exactly the same way </li></ul>
  11. 11. Plant Hybrids <ul><li>More successful than animals </li></ul><ul><li>Can often reproduce without side effects </li></ul><ul><li>Plants can become hybrids on their own through pollinating and spreading seeds </li></ul><ul><li>Created by humans to perfect the different plant species </li></ul>
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