Activating genes with light. Credit: Sahand Rahi (EPFL) Evolution is nature's way of engineering biological systems. Inside cells, many variations of DNA, RNA, and proteins arise, and natural selection favors the organisms that function most effectively. Humans began harnessing this process long ago. Early farmers influenced evolution by choosing which crops and livestock reproduced, allowing the most productive plants and animals to pass on their traits. Today, scientists apply similar

Tag-uri: DNA