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downs and williams
| Question | Answer |
|---|---|
| what is the most common genetic disorder? | downs syndrome. |
| how common is downs syndrome? | 1 in 733 births |
| what causes downs syndrome? | trisomy of chromosome 21 |
| what is the most common example of trisomy21? | an extra copy so there are 3 chromsome 21, this occurs in 98 percent of the population. also can occur: partial trisomy or mosiacs. |
| what is the life expectancy of downs syndrome patients? | 50-55 |
| how much smaller is the downs syndrome brain? | 18% in one study! |
| what part of the down syndrome is smaller than normal? | anterior-posterior brain measurement (so front to back) |
| what is unusually large in down syndrome patients? | parietal lobes and subcortical structures |
| what is wrong with the cerebellum in downs syndrome? | too small |
| what is controversially under developed in downs syndrome patients? | superior temporal gyrus |
| what is one of the strenghts of down syndrome kids? | pragmatics |