The study and reconstruction of phylogenies is

A.  evolution.
B.  systematics.
C.  taxonomy.
D.  taxidermy.
E.  cladistics.


B.  systematics.

Biology & Microbiology

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Whether skin is penetrated

What will be an ideal response?

Biology & Microbiology

After an oil spill, bacteria that can metabolize hydrocarbons are released for bioremediation. After a month, two areas affected by the spill show different levels of improvement. Which factor should be measured to determine the difference in effectiveness between the two sites?

A. Nutrient levels B. pH C. Salinity D. Oxygen levels E. Temperature F. All of these factors may play a role.

Biology & Microbiology

Enhancers are

A) adjacent to the gene that they regulate. B) required to turn on gene expression when transcription factors are in short supply. C) the site on DNA to which activators bind. D) required to facilitate the binding of DNA polymerases.

Biology & Microbiology

Place each of the following terms with the correct statement.coevolutiondefensive colorationcamouflagesecondary chemical compoundsBatesian mimicryIt is a situation in which a palatable organism resembles another kind of organism that is distasteful or toxic.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology