The phosphorylation pattern on the CTD is dynamic during the elongation process, catalyzed and controlled by multiple protein kinases, including P-TEFb, and phosphatases.

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#Id: 9597

#Unit 11. Evolution and Behavior

Homo habilis – First tool maker

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#Id: 2476

#Unit 13. Methods in Biology

Agarose is one of the components of agar, which is a mixture of polysaccharides isolated from certain seaweeds and usually used at concentrations of between 1% and 3% in labs. 

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#Id: 6692

#Unit 3. Fundamental Processes

A very different form of RNA editing is found in the RNA transcripts that encode proteins in the mitochondria of trypanosomes.

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#Id: 554

#Unit 2. Cellular Organization

Vegetative cells begin sporulation when a key nutrient- carbon or nitrogen source becomes scarce.

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#Id: 7406

#Unit 5. Developmental Biology

The highest concentrations of Dorsal in the most ventral cell nuclei, become the mesoderm