Scientists supporting phyletic gradualism explain any period of stasis in the fossil record as stabilizing selection

___________ Indicate whether the statement is true or false.


True

Biology & Microbiology

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Why are toxins more concentrated in sediments than in the overlying water column?

What will be an ideal response?

Biology & Microbiology

Which of the following are threatened by red

imported fire ants?

a. native ant populations b. ant-eating lizards c. ground-nesting birds d. native plants e. all of these

Biology & Microbiology

To best isolate mutant bacteria that are threonine auxotrophs from a larger population, threonine-rich media should be inoculated and any colonies that form are presumptive auxotrophic mutants.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The bacterial Shine-Dalgarno mRNA sequence is:

A. a translation termination signal. B. the ribosomal binding site. C. a translational elongation factor. D. a protein coding region.

Biology & Microbiology