People with Down’s syndrome invariably affected by: A)Huntington’s disease B)Alzheimer’s disease C)Meningitis D) Brain haemorrhage
Option B) The best-known and most common chromosome abnormality in humans is Down’s syndrome, a condition associated with an extra chromosome 21. Down’s syndrome individuals also almost invariably develop Alzheimer’s disease, a form of dementia that is fairly common among the elderly. People with Down’s syndrome develop this disease in their fourth or fifth decade of life, much sooner than other people.
