Hemophilia B (Christmas disease), is caused by factor IX deficiency.

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#Unit 10. Ecological Principles

The overall richness of the region, called gamma diversity or γ diversity

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#Unit 3. Fundamental Processes

scrunching model -proposes that DNA downstream from the stationary, promoter-bound, polymerase is unwound and pulled into the enzyme. The DNA thus accumulated within the enzyme is accommodated as single-stranded bulges.

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#Unit 4. Cell Communication and Cell Signaling

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#Id: 949

#Unit 5. Developmental Biology

Sperm-specific calcium channels are encoded by CatSper genes

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#Id: 2149

#Unit 9. Diversity of Life Forms

Many phenotypic traits are genetically variable within species, they can readily evolve by natural selection and genetic drift.