Genetics

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Genetics
- Phenotype- physical characteristic
  - Blue eyes, brown eyes
- Genotype- genes/ alleles
  - BB, Bb, bb
- Karyotype- a person's chromosomes
- Inherited diseases
  - Cystic Fibrosis
    - recessive allele
    - affects lungs, digestive and reproductive systems
      - affects cell membranes and causes extra mucus to be produced
    - If both parents are carriers (Cc)
      - 25% chance of being unaffected
        50% chance of being a carrier
        25% chance of having cystic fibrosis
  - Polydactyly
    - dominant allele
    - causes extra fingers and/or toes
    - If both parents are homozygous, one for, one without...
      - 100% chance of offspring having polydactyly
  - caused by mutations in DNA
    - resulting in faulty genes that are not properly expressed
- Screening
- Alleles
affects lungs, digestive and reproductive systems
- affects cell membranes and causes extra mucus to be produced

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