Human Evolution, Genetics Research

Bildnummer 12628543
Human Evolution, Genetics Research
Recent advances in the study of ancient genomes now allow scientists to study parts of the epigenetic code in our ancient forbears and compare it to patterns in present-day humans. A study in the May 2, 2104 issue of Science by an international team reconstructed parts of the epigenetic code in both Neanderthals and Denisovans. They discovered changes that may have led to our modern forms, adding another page to the story of human evolution. ACGT is an acronym for the four types of bases found in a DNA molecule: adenine (A), cytosine (C), guanine (G), and thymine (T). A DNA molecule consists of two strands wound around each other, with each strand held together by bonds between the bases. Adenine pairs with thymine, and cytosine pairs with guanine. The sequence of bases in a portion of a DNA molecule, called a gene, carries the instructions needed to assemble a protein. Release date May 28, 2014.
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Credit: Science Photo Library / NHGRI / Jonathan Bailey
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