Alu elements, labeled with green fluorescence in these human chromosomes, make up more than 10 percent of the human genome. (Image from Bolzer et al., (2005) Three-Dimensional Maps of All Chromosomes ...

Although the anatomical differences in echolocation in bats and whales are strong evidence of independent evolution, recent research has found that several genes involved in hearing are nearly ...

For 150 years scientists have been trying to explain convergent evolution. One of the best-known examples of this is how poisonous butterflies from different species evolve to mimic each other's color ...