Biology Genetic Disorders

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Biology Genetic Disorders
2011-02-22 22:51:28
biology genetic disorders

biology genetic disorders ch. 14
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  1. Albinism
    Lack of pigment in skin, hair, and eyes; caused by recessive alleles
  2. Galatosemia
    Accumulation of galactose in tissues, mental retardation, eye and liver damage; caused by recessive alleles
  3. Phenylketonuria (PKU)
    Accumulation of phenylalanine in tissues, lack of normal skin pigment, mental retardation; caused by recessive alleles
  4. Tay-Sachs disease
    Lipid accumulation in brain cells, mental deficiency, blindness, death in early childhood; caused by recessive alleles
  5. Achondroplasia
    Dwarfism; caused by dominant alleles
  6. Huntington's disease
    Mental deterioration and uncontrollable movements, symptoms appear in middle age; caused by dominant alleles
  7. Hypercholesterolemia
    Excess cholesterol in blood; heart disease
  8. Sickle cell disease
    Misshapen red blood cells, clot capillaries, damage tissues; caused by codominant alleles
  9. Cystic Fibrosis
    Caused by deletion of 3 bases in DNA sequence. Causes protein to fold improperly and is destroyed before it can reach cell membrane.
  10. What chromosomal abnormality causes Patau Syndrome?
    extra #13 chromosome
  11. What chromosomal abnormality causes Edward Syndrome?
    extra #18 chromosome