The Death of a Gene

When a gene is duplicated, the new copy is often dead-on arrival (lacks the regulatory elements). 

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#Id: 118

#Unit 5. Developmental Biology

Cells of the responding tissue must have both, 

A receptor protein for the inducing factor 

The ability to respond to the signal

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#Id: 593

#Unit 2. Cellular Organization

Lytic growth proceeds when PL and PR remain switched on while PRM is kept off. Lysogenic growth, in contrast, is a consequence of PL and PR being switched off and PRM switched on.

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#Id: 6513

#Unit 7. System Physiology – Animal

DOPA is converted to dopamine in the cytoplasm of the cells by DOPA decarboxylase (amino acid decarboxylase)

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#Id: 2310

#Unit 3. Fundamental Processes

The transition from the closed to the open complex involves structural changes in the enzyme and the opening of the DNA double helix to reveal the template and nontemplate strands. This “melting” occurs between positions –11 and +2, with respect to the transcription start site.

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#Id: 6036

#Unit 10. Ecological Principles

Sum total of all the variety of living organisms on earth constitute biodiversity.