Bird Genomes: Winging our way

Recently, 40+ bird genomes were sequenced, and we are still just beginning to sift through the data. How did birds lose their teeth? (Yes, teeth.) How did they evolve to learn complex songs? Has flying made their genomes smaller? Get the scoop from Allison Schultz.

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When two become one: the evolution and development of external genitalia on land

External genitalia are an important adaptation to life on the land, where eggs may dry out and there is no water for sperm to swim through. Reptiles, birds, and mammals have extremely diverse external genitalia, but they share a common evolutionary and developmental origin. Mara Laslo explains how comparative developmental studies are shedding insight on the development of these remarkable organs.

Man’s best friend– since when?

The dog is the only large carnivore that has been fully domesticated and one the few domesticated animals that was not kept primarily for food. Despite their widespread adoption into human cultures today, relatively little is known about the early events in the history of dog domestication. When and where did dogs originally become domesticated? Russ Corbett-Detig explains.

That’s Bananas!—How flowers get fancier

Frivolous as it may sound to us, making pretty flowers is serious business for a plant. Fancier flowers often mean more attention from pollinators and greater reproductive success, and the huge diversity of flowers around today shows that the evolution of new flower types has paid off. But how can plants afford to experiment with such an important developmental process? As Becky Povilus explains, they do and they don’t.