How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: the lines that eventually give rise to segments, organs, or markings like ...

ch. 1. Ode to Cecropia: discovering nature -- ch. 2. Teasing the strands apart -- ch. 3. Time, energy, and biological evolution -- ch. 4. Evolution of the earth -- ch ...

Discover interesting facts about how evolution works, the different patterns that can emerge from evolution, how quickly organisms can evolve, and whether evolution is a random or ordered process When ...