A comprehensive series of such temperature-sensitive mutants in Escherichia coli identifies a set of loci called the dna genes. The dna mutants distinguish two stages of replication by their behavior when the temperature is raised

The members of the major class of quick-stop mutants cease replication immediately upon a temperature increase.

The members of the smaller class of slow-stop mutants complete the current round of replication, but cannot start another.

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#Id: 8425

#Unit 10. Ecological Principles

Fecundity - The number of offspring produced by an organism per reproductive episode. 

Parity - The number of reproductive episodes an organism experiences. 

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#Id: 9881

#Unit 4. Cell Communication and Cell Signaling

Defensins and cathelicidin LL-37 are secreted constitutively by epithelial cells in many tissues, and are stored as well in neutrophil granules, where they contribute to killing phagocytosed microbes.

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#Id: 7202

#Unit 5. Developmental Biology

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#Id: 3362

#Unit 6. System Physiology – Plant

The rate of rotation in intact mitochondria has been estimated at about 6,000 rpm—100 rotations per second

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#Id: 5774

#Unit 10. Ecological Principles

Difference is known as beta diversity, or β diversity