Sperm-specific calcium channels are encoded by CatSper genes

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#Id: 6772

#Unit 3. Fundamental Processes

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#Id: 5739

#Unit 10. Ecological Principles

Paul and Ann Ehrlich (1981) proposed an alternative called the rivet hypothesis Some species play a small but critical role in keeping the plane, the community, airborne, while other species do not

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#Id: 2045

#Unit 8. Inheritance Biology

Genetic Maternal Effect, determination of the phenotype of an offspring not by its own genotype, but by the nuclear genotype of its mother.

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#Id: 8573

#Unit 2. Cellular Organization

In all epithelia, keratin filaments associate with: Desmosomes (cell–cell contact)

Hemidesmosomes (cell–matrix contact)

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#Id: 9703

#Unit 4. Cell Communication and Cell Signaling

An a haploid cell secretes the a mating factor and has GPCRs for the α factor on its cell surface; an α cell secretes the α factor and has GPCRs for the a factor.