4

If you are thinking that, say, a chromosome 1 triploidy will not result in cognitive impairment... that's not quite right. Almost all triploidies result in death. Same with chr2, chr3, chr4...just about every chromosome is lethal if there are extras. It's not so much that having extra sex chromosomes is bad for cognitive function, it's that having extra ...


2

Cognitive impairment does not have to do anything in particular with the sex chromosomes. Downs syndrome results because of trisomy of an autosome and it also results in cognitive impairment. So, cognitive impairment is associated with incorrect gene dosage. As mentioned in the other answer, most aneuploidies are lethal. Persons affected by aneuploidies do ...


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