Vg-1 and wnt are used in both frogs and chicks to establish a body axis, although in chicks this is the antero-posterior axis instead of the dorso-ventral axis. What is the region of the chick embryo that is thus analogous to the Nieuwkoop center?

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#Question id: 11477

#Unit 7. System Physiology – Animal

How could you genetically modify an animal so that it would distinguish more shades of green?

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#Question id: 4578

#Unit 11. Evolution and Behavior

Which definition of evolution would have been most foreign to Charles Darwin during his lifetime? 

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#Question id: 1570

#Unit 4. Cell Communication and Cell Signaling

Which cells and which signaling molecules are responsible for initiating an inflammatory response?

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#Question id: 17084

#Unit 12. Applied Biology

What color does phenol red turn in acid?

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#Question id: 23368

#General Aptitude

The combination of computing, telecommunications and media in a digital atmosphere is referred to as: