Complex Trait Selection

This simulator models morphological evolution using multiple genetic parameters. Every aspect of these dogs—face shape, eye size/spacing, snout dimensions, ear droop, body girth, leg length, tail length, and coat color—is mathematically rendered based on their "DNA".

Click the dog you want to breed. Its offspring will inherit its traits with slight random mutations. Watch how directional selection over generations can radically alter a species' body plan!

Generation 1