In regenerating planaria, β-catenin is activated in the posterior-facing blastema, which generates a tail.

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#Id: 97

#Unit 5. Developmental Biology

Conditional specification is the process by which cells achieve their respective fates by interacting with other cells.

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#Id: 8531

#Unit 2. Cellular Organization

Dynamic instability 

Rapid interconversion between a growing and shrinking state, at a uniform free tubulin concentration

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#Id: 3419

#Unit 3. Fundamental Processes

Ku70 and Ku80 are the most fundamental components of NHEJ. They constitute a heterodimer that binds to the DNA ends and recruits DNA-PKcs, which is a protein kinase

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#Id: 2720

#Unit 12. Applied Biology

Bacteriostatic Drugs

Drugs that inhibit the growth of the pathogen without causing cell death are called bacteriostatic. These drugs target metabolic pathways that are necessary for bacterial growth but not for bacterial survival.

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#Id: 6524

#Unit 7. System Physiology – Animal

Five dopamine receptors fall into two major categories: D1 -like (D1 and D5 )  D2 -like (D2 , D3 , and D4 )