A HOX gene called Pax6 is required for developing light sensing eyes (or eye-like structures) in a range of Phyla including Cnidaria, Mollusca, Arthropoda, and Chordata. Humans (Chordata) and squid (Mollusca) have complex eyes with many shared features, like a lens, that are NOT found other Phyla that have eyes or eye-like structures. a. Are the human eye lens and the squid eye lens most likely homologous or analogous structures? Briefly explain your reasoning. (2 points) b. If you could examine the DNA of a "lens formation" gene in a squid and in a human, what evidence would support your reasoning? (2 points)