Which technique is appropriate for studying protein-protein interactions?

a. nuclear magnetic resonance
b. mass spectrometry
c. protein microarrays
d. x-ray crystallography


c. protein microarrays

Biology & Microbiology

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Which of the following is not an assumption in the Hardy-Weinberg equilibrium and will result in a change in allele frequency?

A. no natural selection B. random mating C. individuals immigrate or emigrate D. a very large population E. mutations do not occur

Biology & Microbiology

In horses, black coat color is influenced by the dominant allele (B), and chestnut coat color is influenced by the recessive allele (b). Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). If a homozygous black trotter is crossed to a chestnut pacer, which phenotype will be the most common in the F2 generation?

A. Black pacer B. Black trotter C. Chestnut trotter D. Chestnut pacer E. Both black and chestnut pacers

Biology & Microbiology

Which of the following bacterial genera plays an important role in environmental nitrogen cycles?

A) Nitrobacter B) Rhizobium C) Azospirillum D) both Nitrobacter and Rhizobium E) Nitrobacter, Rhizobium, and Azospirillum

Biology & Microbiology

A gene pool is

A. all the genes in a population. B. the genes that are unique to a species. C. a group of species that look alike but are not located in the same area at the same time. D. all the similar genes in a gene family. E. a swimming hole for geneticists.

Biology & Microbiology