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Scientists have created embryos. What does that mean? And what comes next? Save Normal text size Advertisement Every cell in your body comes from a single cell: an egg, fertilised by a sperm. Each contains the exact same genetic blueprint for your life: your DNA. Yet cells in your brain look and behave nothing like those in your muscle or skin. Professor Jose Polo in front of images of his model embryos. Credit:Monash University Why? Because while each cell has the same instructions, each cell only reads certain sections – certain genes. A layer of what are called epigenetic instructions sit on top of your DNA, telling each cell which parts to read and which parts to ignore.

United kingdomNew south walesMegan munsieJulian koplinJose poloAinsley newsonJason smithDavid gardnerUniversity of sydney school public healthUniversity of melbourneMurdoch children research instituteJia ping tanXiaodong liyProfessor david gardnerReproductive biologyAssisted conception laboratories