The Two Genomes in Every Eukaryotic Cell From Alaska down to the Baja Peninsula, the rocky tide pools of North America’s West Coast are separated by hundreds of kilometers of sandy beaches. Read More »
RNA-DNA Chimeras Might Have Supported the Origin of Life on Earth Molecules that combine elements of RNA and DNA, so-called chimeric molecules, may have been an important step in the emergence of life on Earth from Read More »
Natural Selection Kept Neanderthal DNA in Modern Humans The human genome is peppered with the DNA of extinct hominins—Neanderthals and Denisovans—as a result of interbreeding with early Homo sapiens. According to some reports, Read More »