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Unformatted text preview: Category Function A gene in this category a. Maternal effect _ establish the anterior/posterior axis __ ___ nanos _______ b. Pair rule _ form more refined segments _ even-skipped or odd-skipped __ c. Segment polarity _ Define ant/post regions of segment _ engrailed _______ d. Homeotic __ Specify segment identity _____ __ ultrabithorax _______ 3.) The Antennapedia gene is one of the master regulators of segment identity; it is normally expressed only in the second thoracic segment. In a fly with a loss-of-function mutation in Antennapedia, what happens? (Circle one) a. Development proceeds normally. b. The legs of the second thoracic segment are transformed into antennae. c. The third thoracic segment is transformed into a second thoracic segment. d. The legs of the third thoracic segment are transformed into antennae. e. The antennae of the head are transformed into legs. wildtype mutant #1 mutant #2...
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This note was uploaded on 05/26/2011 for the course BIO 205 taught by Professor Reed during the Spring '11 term at UNC.
- Spring '11