In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

"Toy" and "toe" are two orthologs of the PAX6 gene in Drosophila named for their influence on the development of these structures. In insects and millipedes, these structures are made of clusters of hexagonal ommatidia, and rhodopsin is a pigment found in these organs. The(*) hyaloid canal passes through the vitreous humor in this organ, and rods and cones are specialized neurons found in the retina in this organ. For 10 points, name this organ in which the iris controls the passage of light through the pupil and toward the lens.
Social Science

One of this author's works deals with Jessie Stilwell's harboring of Ann Davis and her lover, the painter Gideon Shibalo. A Soldier's Embrace contains stories like "Oral History," about the suicide of a village chief during a war in Zimbabwe. Jacques Demy's film The Umbrellas of Cherbourg influenced her recent work The Pickup, and her other novels include The Late Bourgeois World, The Lying Days, A Sport of Nature, and the aforementioned Occasion for Loving. FTP, name this author of July's People, Burger's Daughter, and The Conservationist, a South African Nobel winner.
Literature

The Andante Quietoso in E-flat minor and Grand Duo for Piano and Violin are respectively numbered five and six in Wilhelm Mohr's catalogue of this man's work. His final works were his Trois Chorales and one collection includes his piece Cantabile as well as a rhapsody on two themes known as the Pice Heroique. Another collection contains the complicated Prlude, Fugue, et Variation, as well as a Pastorale, a Prire, and the famous (*) Grand Pice Symphonique. The latter piece frequently draws comparison to an even larger work dedicated to his student Henri Duparc and is noted for the melody of the English horn over the harp and strings in the Allegretto second movement. For 10 points, name this French organist and composer of the Symphony in D Minor.

Fine Arts