Modern Human Migrations: The First 200,000 Years

摘要: In a way, the DNA sequences contained within each of our cells can be thought as text in microscopic book. This is amazingly long, approximately one million pages if 6,000 letters fit on both sides page. contains codes used to build RNA and proteins, which turn assemble all tissues bodies direct chemical reactions life. We inherit copies this genome book from parents pass children. However, generation, small changes are made, 175 out genome, also passed descendants. infer how closely people related by comparing these types inherited changes, shared between individuals or groups individuals. Most no functional consequence, such using either American British spelling for color/colour; meaning still same. occasionally, there change that result phenotypic difference among