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Unformatted text preview: What is an ommatidia? Sevenless is an RTK, and boss is the ligand that activates sevenless. Which cell in the ommatidia expresses boss? The differentiation of which cell depends on sevenless activation? How many R7 cells would be in each ommatidia if sevenless was unactive? How many R7 cells would be in each ommatidia if sevenless signaling was overactivated in too many cells? Which of the above scenarios results in rough eyes? (BOTH!) Su(SevS11)R1 and E(sev)2B are at same position in chromosome 2 as drk How were these alleles isolated? (understand role of sevenless and boss) suppressor of strong sevenless signaling enhancer of weak sevenless signaling Both reduce signaling Both the same gene...
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This note was uploaded on 10/19/2009 for the course B M B 460 taught by Professor Hanna-rose,w during the Spring '08 term at Pennsylvania State University, University Park.
- Spring '08