What is a problem with applying the phenetic species concept?

a. One must construct a phylogenetic tree.
b. Character weighting is ambiguous.
c. Gene flow must be measured.
d. The concept only works with sexual species.


B

Biology & Microbiology

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Which body form of the cnidarians is sessile?

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The study of comparative morphology has revealed the conservative nature of the genes

responsible for a. food procurement. b. reproductive behavior. c. embryonic development. d. size. e. mating behavior

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A medium containing known substances in precise amounts is known as a ________ media.

A) selective B) complex C) natural D) defined

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