Domesticated animals are animals that have been selectively bred and genetically adapted over generations to live alongside humans. They are genetically distinct from their wild ancestors or cousins.

Surprisingly, genome comparisons have failed to resolve a major question in animal evolution: Which living animals are the descendants of the earliest animals to evolve in the world's oceans?

Animal research’s benefits are clear – but public awareness of what it involves is not. Javier Pierini/DigitalVision via Getty Images A proposed measure in Switzerland would have made that country the ...