The coexistence of multiple alleles at a locus in a population is called genetic polymorphism. A locus is usually defined as polymorphic if two or more alleles are present at a frequency of more than 1% in the population.

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#Id: 5967

#Unit 10. Ecological Principles

Light

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#Id: 8829

#Unit 6. System Physiology – Plant

When PSII receives more light than PSI, plastoquinone becomes predominantly reduced, resulting in activation of the LHCII kinase. The kinase phosphorylates LHCII, resulting in migration of LHCII away from the granal region where it can associate with PSI, thereby adjusting the relative excitation of PSII and PSI.

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#Id: 7506

#Unit 4. Cell Communication and Cell Signaling

RAG1 subunit and contains two aspartic acid residues and one glutamic acid residue (D600, D708, and E962, respectively). This active site “DDE motif” is found in many enzymes that cleave DNA

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#Unit 6. System Physiology – Plant

Biological effects of cytokinins

Removes       Promotes accumulation of G1 cyclins (CycD)

inhibitory

phosphate 

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#Id: 5781

#Unit 7. System Physiology – Animal

Each spherical follicle is surrounded by a single layer of polarized epithelial cells and filled with pink-staining proteinaceous material called colloid.