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How would you test whether or not a species is capable of and uses chemotaxis? Do...

How would you test whether or not a species is capable of and uses chemotaxis?

Do you think that group selection affects evolution of natural populations? Why or why not? trait is cooperative? why?

What is frequency-dependent fitness?

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Answer #1

To test whether or not a species is capable of and uses chemotaxis we can use the checkerboard assay to determine the same. In this assay, we prepare different concentrations of putative chemotactic factor under non gradient conditions and then measure the enhancement of movement in response to the chemotactic factor and tally the same with positive and negative gradients. If we find positive results and observe enhancement, we can conclude that chemotaxis has taken place.

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