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Name of disorder Effective picture showing major symptoms Your name and class period. Title Slide. Down Syndrome. Mr. Nicholl: Biology Period 1. Description Normal Karyotype. Effected Karytype. Chromosome # and/or gene identified. Cause.

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Title Slide

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  1. Name of disorder Effective picture showing major symptoms Your name and class period Title Slide Down Syndrome Mr. Nicholl: Biology Period 1

  2. Description Normal Karyotype. Effected Karytype. Chromosome # and/or gene identified Cause Down Syndrome is caused by an extra 21st chromosome and is therefore called Trisomy 21. It is usually caused by an uneven separation of chromosomes during meisois. This mutation is called “non-disjunction” Down Syndrome (male) Normal (female)

  3. 3-4 symptoms 5-6 symptoms 7-8 symptoms 9-10 symptoms Pictures Symptoms Symptoms Almond shape eyes Mental retardation Poor muscle tone Round head Thin straight hair Protruding tongue Defects with heart, eyes, ears and other organs

  4. Who discovered it When was it discovered How was it discovered Pictures History Discovered by: John Langdon Down 1866 England He noticed children with common features and characteristics including MR. 1956 Lejeune and Jacobs discovered the trisomy on chromosome 21

  5. Race, ethnic, or religious groups Gender Geographic location Prevalence Hereditary Risks • There are no greater risks for ethnic, religious, or geographic areas for Down Syndrome. It is distributed equally among all groups. • However, older mothers are at much greater risk. • Occurs in 1 in 1100 births • (1 in 30 births for women over 45 yrs old!!)

  6. Life Expectancy & Cause of Death Life expectancy Life expectancy 45-50 years old Cause of death Cause of death Many health issues throughout life, include heart and organ problems. Older individuals suffer from Alzheimer’s-like dementia Picture/Illustration

  7. Punnett Squares Show where the disorder is located Autosomal or sex-linked? Punnett Squares Down Syndrome is an autosomal disorder on chromosome 21. T T T Down Syn. parent TTT Normal parent T TT T TT TTT Many Down Syndrome people can not reproduce (sterile). However, those that can have a 50% chance of an effected offspring. The other 50% may be normal.

  8. Cure? List 1 or 2 treatments. List 3 or 4 treatments List 5 or more treatments Pictures Treatments/Cures Cure There is no cure for Down Syndrome. Treatments Physical therapy surgery Hearing aids eyeglasses Special school medication

  9. Name one group Name two groups Explain what their goal is Contact information Support groups 1. National Association for Down Syndrome (NADS) http://www.nads.org/ Provide support, advise, online help, fundraiser opportunities. Also, monthly meetings and social functions for families. 2. National Down Synrome Society (NDSS) http://www.ndss.org Help families with education, leadership, and advocacy.

  10. Background color Animation Web link Slide Transition Presentation Points • Voice • Knowledge • Eye catching • Timing • Interesting Volume, tone, speed Click “Format” Don’t just “read”, elaborate!! Click “slide show” Then “custom animation” Good use of pictures. DON”T write paragraphs…this is NOT a paper!! Insert from web 3-5 minutes Click “slide show” Then “slide transition” Enjoyed by audience

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