In 1908 Orla-Jensen suggested that bacteria be grouped according to their

A. arrangement.
B. morphology.
C. physiology.
D. Gram stain.


C

Biology & Microbiology

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Studying the transcriptional activity of flagellar genes would not likely reveal differential changes when the cells are actively motile compared to nonmotile activity, because a two-component regulatory system is sufficient to control flagellar activity

Indicate whether the statement is true or false.

Biology & Microbiology

Can gene frequencies change in the absence of selection? Why or why not?

What will be an ideal response?

Biology & Microbiology

Mutations are the original source of new alleles, but may be adaptive, __________ or __________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Describe how the Ames test is used to determine whether a particular chemical is mutagenic

What will be an ideal response?

Biology & Microbiology