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Ch 15.2: Human Genetic Disorders Essential questions: n What are the effects of errors in meiosis? n How do small changes in DNA affect human traits?
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Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

Jun 24, 2020

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Page 1: Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

Ch 15.2: Human Genetic Disorders

Essential questions:nWhat are the effects of errors in meiosis?nHow do small changes in DNA affect human traits?

Page 2: Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

n Chromosomal Disorders§ nondisjunction

Page 3: Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

– Down Syndrome

Page 4: Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

– Sex Chromosome Disorders§ Turner�s syndrome – XO§ Klinefelter�s syndrome - XXY

Page 5: Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

n From Molecule to Phenotype– Disorders caused by individual genes

§ Sickle cell disease§ Cystic fibrosis§ Huntington’s disease

Page 6: Ch15.2: Human Genetic Disordersblogs.4j.lane.edu/.../ch-15.2-notes_2018_4_24_human-genetic-disord… · on the tongue enlarged liver and spleen ; hut-terr ulcers in the intestine

– Genetic advantages§ CF Allele & typhoid§ Sickle cell allele & malaria