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bio for non majors 10

bio for non majors 10 - DNA DNA replication DNA replication...

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DNA DNA replication DNA replication Mutations and Disease: Huntington’s Disease Autosomal Dominant Affects 3-7 out of 100,000 people of European decent Symptoms, including changes in personality, loss of cognition, uncontrollable movements appear at 30-50 years of age No cure, treatment attempts to make the patient more comfortable Gene: IT15 Contains repeats of CAG Normal individuals have less than 34 repeats of CAG Those with 35-39 will sometimes have the disease Those with 40 or more repeats will definitely have the disease Faulty protein builds up in nerve cells Mutations and Disease: Phenylketonuria (PKU) Autosomal Recessive Occurs in 1 in 10,000-15,000 newborns Without treatment, patients may have delayed development, learning and behavioral problems Treatment includes a low protein diet Gene: PAH Codes for a protein that breaks down phenylalanine Causes accumulation of phenylalanine, resulting in brain damage
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