Respuesta :
Answer:
Glaucoma is polygenic trait.
Explanation:
As per given information, Glaucoma disorder is a phenotype regulate by three genes and more than 20 genetic loci. A genetic trait that is regulated by more than one gene is called polygenic trait.
Here, Glaucoma is regulated by three genes. This makes it a polygenic trait. The phenotype depends on the total number of dominant alleles of all the three genes.