Round 6: Tossup 10

Pax6 regulates the development of one component of this organ (15[1])across multiple (15[2]-5[1])species. (15[1])Crystallins make up one part of these organs in vertebrates. (15[1])A theory of the Cambrian Explosion posits that the evolution of these organs started an “arms race.” These organs are filled with aqueous humor, which is secreted (15[1])from the ciliary body. Large examples of these organs in (*) giant squids are focused through movement, rather than changing shape. Thomas Hunt Morgan compared white and red examples of these organs in Drosophila. For 10 points, name these sensory organs that allow the perception of visual information. ■END■

ANSWER: eyes [anti-prompt on retina or lens by asking “what larger organ is it a part of?”]
<Science - Biology, Sarkar> | VAULT II Packet 06
= Average correct buzzpoint

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