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Are old people with blue eyes related? Understanding the genetic ancestry

According to genetic research, all humans with blue eyes today can be traced back to a single ancestor who lived between 6,000 and 10,000 years ago. This means that while not all old people with blue eyes are directly related as close family, they do share a unique genetic lineage that sets them apart from the brown-eyed majority. The question, 'Are old people with blue eyes related?', therefore reveals a fascinating evolutionary story about a single genetic mutation that changed a physical trait for millions.