The earliest known cases of sex-chromosome syndromes, identified by researchers, suggest that people with extra or missing chromosomes existed 5,000 years ago. According to a study published in Communications Biology, people with genetic syndromes have existed throughout human history and have been a part of human societies.

Sex-chromosome syndromes existed even 5,000 years ago, ancient DNA study reveals

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Sex-chromosome syndromes existed even 5,000 years ago, ancient DNA study reveals