Marisa Sloan Staff Writer Ask a group of people to draw a cow, and they’ll likely end up with pictures of big white cows with black spots. The black-and-white cows that most people are used to seeing are called Holsteins, the breed that dominates the dairy business because they produce a lot of milk. According to Chad Dechow, a geneticist at Pennsylvania State University, the … Continue reading Cows Used in Dairy Production Losing Genetic Diversity