Which of the following gene is activated in cells that have high levels of the Even-skipped, Fushi tarazu, or Paired & repressed in cells that have high levels of Odd-skipped, Runt, or Sloppy-paired?

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#Question id: 18921

#Unit 13. Methods in Biology

What is an auxotrophic mutant?

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#Question id: 20978

#Unit 12. Applied Biology

Which of these biosensors use the principle of heat released or absorbed by a reaction?

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#Question id: 365

#Unit 1. Molecules and their Interaction Relevant to Biology

Water is a polar molecule: the oxygen atom with its unshared electrons carries a partial negative charge (δ−) of ___________, and the hydrogen atoms each carry a partial positive charge (δ+) of __________, where e is the charge of the electron.

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#Question id: 12285

#Unit 10. Ecological Principles

The principle of competitive exclusion states that

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#Question id: 19279

#Unit 9. Diversity of Life Forms

which features of cycads makes them similar to many angiosperms? 

1. They have exposed ovules

2. They have flagellated sperm

3. They are pollinated by animals