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-Genetic Disorders-
| Question | Answer |
|---|---|
| PKU(phenylketonuria) | gene doesn't break down phenlalanine, causes brain damage and mental retardation; urine test at birth; modify diet of child(early detection important!)rec. |
| Cystic Fibrosis | found on chromosome #7; most common fatal inherited disease among U.S. Caucasions, gene causes buildup of mucus that clogs and damages the lungs; with treatment, can live to early adulthood; simple skin test(salty sweat will be present)rec. |
| Tay-Sachs Disease | doesn't make enzyme to breakdown lipids(fats) in the brain--> damages brain; most common among Jews of European descent; child dies very young(5yrs)rec. |
| Sickle-Cell disease | gene causes red blood cell to be "sickle-shaped"; cells don't get enough oxyen,leads to deterioration of joints and damage to organs and tissues. more resistant to malaria; common to people of African-American descentrec. |
| Huntington disease | causes breakdwon of brain cells; fatal, but symptoms do not usually appear until person is over 30 years old!(50% of children can inherit disease) 25,000 in U.S.Dom. |
| Color Blindness | on X sex chromosome; difficult to tell certain colors apart; can lead a fairly normal life; more common in males than femalesrec. |
| Polydactyly | extra fingers and toes; can lead a "normal life" more common in Amish CommunityDom. |
| Muscular dystrophy | on X chromosome; gene causes weak muscles; child becomes weaker & weaker until dies by the age of 13 or 14rec. |
| Dyslexia | affects the brain so that it can not "process" numbers or letters correctly(maybe 2 million Americans may have this); reversals are the most common symptom; harder for reading and mathrec. |
| Elephant Man disease(Joseph Merrick 1890) | affected gene lies near the center of chromosome 17 or sometimes chromosome 22; causes disfiguring. Bones keep growingDom. |
| Alzhelmer's disease | results in gradual but increasing loss of memory; affected gene lies on chromosome 21rec. |
Created by:
LZakutney
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