Edwards syndrome (trisomy 18) occurs when a person has an extra copy of chromosome 18.

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#Id: 5385

#Unit 10. Ecological Principles

Populations have growth limits

Categorize these limits as being either density independent or density dependent.

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#Id: 5954

#Unit 10. Ecological Principles

Assimilation efficiency  Assimilation efficiency is the proportion of ingested energy that is assimilated into the bloodstream (An)

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#Id: 4633

#Unit 13. Methods in Biology

3H thymidine uptake assays were the first to be used routinely to measure cell division in lymphocyte cultures

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#Id: 6468

#Unit 3. Fundamental Processes

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#Id: 3875

#Unit 5. Developmental Biology

Neighboring cells respond to cAMP in two ways:

• Initiate a movement toward the cAMP pulse for about a minute
• Release cAMP of their ownNeighboring cells respond to cAMP in two ways:

• Initiate a movement toward the cAMP pulse for about a minute
• Release cAMP of their own