Chapter 4, Problem 28CONQ

Three coat-color patterns that occur in some breeds of horses are termed cremello (beige), chestnut (brown), and palomino (golden with light mane and tail). If two palomino horses are mated, they produce about $1/4\text{ cremello},$ $1/4\text{ chestnut},$ and $1/2\text{ palomino}$ offspring. In contrast, cremello horses and chestnut horses breed true. (In other words, two cremello horses will produce only cremello offspring, and two chestnut horses will produce only chestnut offspring.) Explain this pattern of inheritance.