Ventral follicle cells synthesize Pipe. Pipe signal sulfates ventral vitelline proteins

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#Id: 2175

#Unit 11. Evolution and Behavior

Selection coefficients-  The allelic frequency at equilibrium (qˆ) depends on the relative fitnesses of the two homozygotes:

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#Unit 3. Fundamental Processes

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#Id: 10391

#Unit 4. Cell Communication and Cell Signaling

Cancer cells 

acquire a drive to proliferate 

does not require an external inducing signal

fail to sense signals that restrict cell division

survive when they should die

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#Id: 2458

#Unit 13. Methods in Biology

When the potential gradient E is applied, the force F on a molecule bearing a charge of Q  sepreated  by distance d (measured in coulombs) is                  (in newton). 

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#Unit 2. Cellular Organization

IPTG (isopropyl b-D-1-thiogalactopyranoside) X-gal (5-bromo4-chloro-3-indolyl-b-D-galactopyranoside). When acted on by that enzyme, X-gal releases a blue color that makes it useful as substrate in assays.