Cohesion, surface tension, and adhesion are the properties of water molecules that ________.

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#Question id: 18623

#Unit 13. Methods in Biology

Which of the following PCR has been devised to increase the specificity of PCR without lowering the efficiency

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#Question id: 5772

#Unit 8. Inheritance Biology

A missense mutation in Neurospora will revert by treatment with nitrous acid (causes transversions), but not by hydroxylamine (causes AT -> GC transitions). The original mutation (not the reversion) must have been

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#Question id: 17670

#Unit 9. Diversity of Life Forms

The following are common to both charophytes and land plants except 

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#Question id: 3296

#Unit 11. Evolution and Behavior

Some beetles and flies have antler-like structures on their heads, much like male deer. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of

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#Question id: 12315

#Unit 10. Ecological Principles

In the evolution of whelk- eating behavior in crows, which of the following did natural selection minimize?