Which of the following could occur due to a mutation in a Hox gene in a human embryo?

W) Polydactyly [poly-dak-til-ee]

X) Sickle cell anemia

Y) Phenylkotunria [free-nil-kee-toe-noo-ree-uh]

Z) Chronic myelogenous [my-uhl-aw-jen-us] leukemia
W) POLYDACTYLY