Quick darwin ncvps

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Quick darwin ncvps

  1. 1. A little about Charlie <ul><li>Charles Darwin is considered the founder of the modern theory of evolution </li></ul><ul><li>In 1831 Darwin was given the position of Naturalist on the HMS Beagle </li></ul><ul><ul><li>For 5 years he traveled in South America and the south Pacific collecting and mapping </li></ul></ul>
  2. 2. Galapagos Islands <ul><li>Small group of islands about 1000 km of the west coast of South America </li></ul><ul><li>Part of Ecuador </li></ul><ul><ul><li>Support some of the greatest diversity of animal and plant life BIODIVERSITY </li></ul></ul>
  3. 4. Some of the struggles Darwin Envisioned to show how things change <ul><li>Competition for food </li></ul><ul><li>Competition for space </li></ul><ul><li>Escape from predators </li></ul><ul><li>The need for shelter </li></ul>
  4. 5. Darwin looked at pigeon Breeding <ul><li>Breed desirable traits </li></ul><ul><li>This is called Artificial Selection- </li></ul><ul><ul><li>A technique in which a breeder selects particular traits. </li></ul></ul>
  5. 6. NATURAL SELECTION <ul><li>A- In nature, there is a tendency toward over production of offspring. </li></ul><ul><ul><li>Fishes, for example, lay thousands, sometimes millions, of eggs </li></ul></ul><ul><li>B- In any population of organisms, individuals will exhibit slight variations . </li></ul><ul><ul><li>Fishes may differ slightly in color, fin and tail size as well as speed </li></ul></ul>
  6. 7. <ul><li>C- Individuals with variations favorable for a particular environment are more likely to survive and pass those variations on to the next generation than individuals with less-favorable variations. </li></ul><ul><ul><li>Example- a fast fish with a skin color that allows it to blend in better with its surroundings is more likely to survive to a reproductive age then slow fish with more obvious color. </li></ul></ul>
  7. 8. <ul><li>D- Gradually, offspring of survivors will make up larger proportion of the population. </li></ul><ul><ul><li>Depending upon the environmental factors, after many generations, a population may come to look entirely different. </li></ul></ul>

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