Genetic Disorders

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  • Genetic Disorders
    • Genotype
      • means what alleles you have.
    • Phenotype
      • means the actual characteristic you have
    • Cystic Fibrosis
      • Caused by a recessive allele
      • People with only one copy won't have the disease - they are known as carriers.
        • For a child to have the disorder both parents must be wither carriers or sufferers.
      • Produces thick sticky mucus in the air passages and pancreas
    • Polydactyly
      • Extra fingers or toes
      • Caused by a dominant allele.
        • Can be inherited by just one parent carrier
    • Embryo screening
      • Advantages
        • It will stop suffering
        • There are laws to stop it going too far.
      • Disadvantage
        • Rejected embryos can be destroyed.
        • Could increase prejudice against people with genetic problems
        • Screening is expensive


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