A snake moves without legs by the scales on its belly gripping the ground. It generates friction at the points needed to move forwards only and prevents its scales from being worn off by too much friction. Leer más.
Till Czypionka, Tamar Krugman, Janine Altmüller, Leon Blaustein, Sebastian Steinfartz, Alan R. Templeton and Arne W. Nolte. Methods in Ecology and Evolution. Article first published online : 30 JUL 2015. As an alternative to lethal sampling, transcriptome analyses can be performed using small biopsies of dispensable tissues. Leer más.