JEAN-FRANCOIS PODEVIN / SCIENCE PHOTO LIBRARY JEAN-FRANCOIS PODEVIN / SCIENCE PHOTO LIBRARY
Human evolution, conceptual computer artwork. Human footprints and a molecule of dna (deoxyribonucleic acid), which contains sections called genes that encode the body's genetic information. Studying the DNA evidence has confirmed the 'Out of Africa' theory of evolution. The theory proposes that anatomically modern humans evolved solely in Africa, between 200 and 100 thousand years ago.
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