Human genetic diseases
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Human genetic diseases Human genetic diseases Presentation Transcript

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