Answer the following question given this paragraph: 

An example of a human polygenic trait is adult height. Several genes, each with more than one allele, contribute to this trait, so there are many possible adult heights. For example, one adult’s height might be 1.655 m (5.430 feet), and another adult’s height might be 1.656 m (5.433 feet) tall. Adult height ranges from less than 5 feet to more than 6 feet, but the majority of people fall near the middle of the range, as shown in Figure below .


Q: Because several genes, each with more than one allele, contribute to determining height in humans, height is considered what kind of trait?


A:
polygenic