Species-Time Hypothesis 

Communities diversify, that is, gain species, with time

Temperate regions are less species-rich than tropical regions because they are younger and have only more recently recovered from glaciations and severe climatic disruption

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#Id: 7608

#Unit 5. Developmental Biology

Mutations in either Juno or Izumo block fertilization

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#Unit 10. Ecological Principles

Regional diversity - Ecologists have often partitioned the overall species diversity of a region into different components

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#Id: 8151

#Unit 2. Cellular Organization

Sec12

acts as a GEF factor for Sar1

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#Unit 13. Methods in Biology

RNA gives absorbance at 595 nm in presence of Diphenylamine while gives directabsorbance at 540 nm.

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#Unit 4. Cell Communication and Cell Signaling

Ca2+-dependent cadherin- mediated adhesion also plays an important role in tight-junction formation, stability, and function.