A 54-year-old woman eats a healthy meal. Approximately 20 min later the woman feels the urge to defecate. Which of the following reflexes results in the urge to defecate when the stomach is stretched?

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#Question id: 15395

#Unit 5. Developmental Biology

Which of the following promote the synthesis of the Paired box 6 (Pax6) transcription factor in the anterior ectoderm?

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#Question id: 1893

#Unit 4. Cell Communication and Cell Signaling

The injection of tuberculin into the skin of a sensitized individual elicits:

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#Question id: 10719

#Unit 10. Ecological Principles

Five Hypotheses Explain How Species Richness Affects Community Services, Following statement are given

A) Community services decline with decreased species richness in a stepwise fashion.

B) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

C) Species richness declines even slightly from its natural levels, community services are reduced immediately

D) Community services change as the number of species increases or decreases, but that the direction of change is not predictable.

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#Question id: 3384

#Unit 11. Evolution and Behavior

In a sample from an African population, the frequency of blood group allele IA, IB and IO were 0.30, 0.20 and 0.50 respectively. What is expected number of homozygous and heterozygous respectively when population size 1200?

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#Question id: 3721

#Unit 3. Fundamental Processes

Polymerization of the lagging strand is catalyzed by ________.