VpreB and λ5 (called a surrogate light chain), to form a pre-B-cell receptor.

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#Unit 6. System Physiology – Plant

Red light-induced Pfr formation initiates the degradation of PIF proteins through phosphorylation, followed by degradation via the proteasome complex

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#Unit 5. Developmental Biology

Cleaved Easter binds to and cleaves Spätzle; activated Spätzle binds to Toll receptor protein

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#Unit 2. Cellular Organization

In the absence of Ca2+, muscle is relaxed

TM blocks myosin’s interaction with F-actin

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#Unit 11. Evolution and Behavior

Ronald A. Fisher, John B. S. Haldane and Sewall Wright- which showed that mutation and natural selection together cause adaptive evolution.

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#Unit 11. Evolution and Behavior

No matter how it is born, a new gene starts its life as a single copy in the population.

As with any new mutation, by far the most likely outcome is that it will be lost by random drift or selection over the next few generations