In yeast, centromeric nucleosomes consist of Cse4, H4, and a nonhistone protein Scm3, in place of H2A-H2B dimers.

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#Unit 3. Fundamental Processes

Sigma factor ensures that bacterial RNA polymerase initiates transcription from specific sites, also reduces binding to nonspecific sequences.

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#Unit 2. Cellular Organization

MacroH2A is nearly three times larger than conventional H2A, and contains a large C-terminal tail that is not related to any other histone.

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#Id: 1071

#Unit 5. Developmental Biology

Arabidopsis that specify floral organ identity:

• APETALA1/ APETALA2

• APETALA3/PISTILLATA 

• AGAMOUS

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#Unit 13. Methods in Biology

Electrophoretic mobility and Electroendosmosis force combinedly functions in Capillary zone Electrophoresis

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#Id: 5843

#Unit 10. Ecological Principles

Character                     early-stage     late stage 

Root to shoot ratio                    high               low

Number of seed                          many             few

Seed size                                      small             large

Biotic potential                           high              low

Productivity per biomass           high              low

NPP                                              high              low

P/R ratio                                       >1                =1

Nutrient cycling                          open             closed

Importance of detrivores           less                more

Stratification                               No                Yes 

Regeneration ability                   more             less

Resistance ability                        less               more