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1.     Why is flagellar structure often referred to as exhibiting "9+2 configuration" and "ninefold symmetry"? What are some of the key structural units involved in the structure referred to by these labels?

 

 

 

 

 

2.     To what extent does variation in flagellar structure and function occur? Note that phylogenetics and environment may each exert influences on varieties observed. Paraphrase an example the authors use to illustrate each.

 

 

 

 

 

3.     What sorts of investigations involving flagella were conducted during the 20th century? How do they compare to more recent flagellum-related research questions? Is progress in understanding the biological nature of flagella being made?

 

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Subject: Biology, Science
1.Why is flagellar structure often referred to as exhibiting '9+2 configuration' and 'ninefold symmetry'?What are some of the key structural units
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