Human genetic diseases

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Human genetic diseases

  1. 1. Human Genetic Diseases<br />Page 117<br />
  2. 2. Objectives<br />Describe some common genetic diseases<br />Examine selective breeding<br />Discuss cloning<br />Analyze genetic engineering<br />Describe current genetic research<br />Construct personal pedigree<br />
  3. 3. Ways to Cause Genetic Disease<br />Mutation in DNA of genes<br />Alteration in structure of a chromosome<br />Change in the number of chromosomes<br />
  4. 4. Cystic Fibrosis<br />Recessive disease<br />Affect 1:31 births<br />Disease: Produce abnormally thick mucus<br />Die early due to infection<br />118<br />
  5. 5. Sickle-Cell Anemia<br />Recessive Disease<br />Discovered in 1910<br />Single nucleotide change from T to A<br />70,000 American’s<br />Chronic body problems<br />118<br />
  6. 6. Hemophilia<br />Sex-linked disease<br />Blood clots very slowly<br />118<br />
  7. 7. Down’s Syndrome<br />Three copies of Chromosome 21<br />Causes<br />Mental retardation<br />Heart defects<br />Risk increases with age of mother<br />118<br />
  8. 8. Pedigree Charts<br />1. Male = Square<br />2. Female = Circles<br />3. Normal = Open<br />4. Disease = Filled<br />5. Carrier = Half filled<br />119<br />
  9. 9. Albinism<br />119<br />
  10. 10. Hemophilia<br />120<br />
  11. 11. Karyotypes<br />Picture of all the cells chromosomes lined up in pairs<br />120<br />
  12. 12. Selective Breeding<br />Process of selecting organisms with desired traits to be the parents of the next generation<br />What desired traits would you like in a dog?<br />124<br />
  13. 13. Inbreeding<br />Breed individuals with similar traits<br />Turkey<br />Plump<br />Quickly maturing<br />Will also inherit similar genetic defects<br />124<br />
  14. 14. Hybridization<br />Breed two genetically different organisms<br />124<br />
  15. 15. Cloning<br />An organism that has exactly the same genes as the one it came from.<br />125<br />
  16. 16. Genetic Engineering<br />Bacteria<br />Other Organisms<br />Resistant to insects<br />Less bruising<br />126<br />
  17. 17. Genetic Engineering<br />Gene Therapy<br />Issues<br />127<br />
  18. 18. Modern Genetics<br />Human Genome Project<br />30,000 genes<br />Average gene is 3,000 bases long<br />DNA Fingerprinting<br />Cut up DNA and look for difference that can identify individuals<br />
  19. 19. Quiz<br />

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