Which one of the following was not an adaptation seen in the sharks (Chondrichthyes)?
A. lateral line system
B. internal fertilization and internal development
C. swim bladder
D. teeth
E. calcified cartilaginous skeleton
C. swim bladder
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_______ can be used to determine the amino acid sequence of a protein or peptide
A. X-ray crystallography B. Nuclear magnetic resonance C. Mass spectrometry D. The ChIP assay
The biological species concept is primarily based on:
A. reproductive isolation. B. morphological differentiation. C. evolutionary history. D. a genome.
The biological species concept cannot be applied to fossils. Which alternate approach to identifying species would be most useful for classifying fossil organisms?
A) an approach based on use of reproductive barriers B) an approach based on genetic history C) an approach based on measurable physical traits D) an approach based on molecular biology
______ testing may be used to determine the presence of exposure to a pathogen like tuberculosis.
Fill in the blank(s) with the appropriate word(s).