Is Alzheimer's an non disjunction

No, Alzheimer's disease is not caused by non-disjunction. Non-disjunction refers to the failure of chromosome pairs to separate properly during cell division, leading to conditions like Down syndrome. Alzheimer's is primarily associated with the accumulation of amyloid plaques and tau tangles in the brain, as well as genetic and environmental factors. While certain genetic mutations can increase the risk of developing Alzheimer's, the disease itself is not classified as a chromosomal disorder resulting from non-disjunction.