Many populations breed seasonally, often once a year some are quarterly or monthly.

These are iteroparity or semelparity.

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#Unit 11. Evolution and Behavior

Natural selection was Darwin’s brilliant hypothesis, independently conceived by Wallace, that accounts for adaptations, features that appear “designed” to fit organisms to their environment.

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#Unit 3. Fundamental Processes

For RNA polymerase II, the positioning factor is TFIID, which consists of TBP associated with up to 14 other subunits called TAFs (for TBP -associated factors). 

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#Id: 519

#Unit 2. Cellular Organization

Escherichia coli K-12 with 950 gene/Mb gene density has 0 introns in genome and less than 1% repetitive sequences

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#Unit 13. Methods in Biology

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#Id: 7187

#Unit 5. Developmental Biology

Wnt inhibitors secreted by the organizer are Dickkopf, Cerberus, Frzb & IGF