Pfr is the physiologically active forms of Phytochrome

Wild type: short hypocotyl by white light

hy mutant (phytochrome mutant): long hypocotyl by white light

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#Id: 10203

#Unit 6. System Physiology – Plant

Biological effects of cytokinins

Removes inhibitory phosphate

Promotes accumulation of G1 cyclins (CycD)

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#Id: 572

#Unit 2. Cellular Organization

Repressor binds with O1and O3 tonhibit expression of lacZ

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#Id: 6880

#Unit 3. Fundamental Processes

Modification of H2A inhibits elongation by inhibiting a histone chaperone that removes histone octamers from DNA as Pol II transcribes through a nucleosome, then replaces them as the polymerase passes. 

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#Id: 7247

#Unit 5. Developmental Biology

T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+. 

T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23. 

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#Id: 1888

#Unit 4. Cell Communication and Cell Signaling

Allelic exclusion

Most T cells fully rearrange and express a TCR chain from only one of their two TCR alleles