You are working to identify enhancer regions of a particular gene. The best place to look is
A. immediately upstream of the promoter.
B. primarily downstream of the promoter, including the exons of the coding region.
C. primarily upstream of the promoter, possibly some distance away.
D. immediately downstream of the promoter.
Answer: C
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Birds use specific songs, coloring, and mating dances to attract mates of their species. This is an example of _____ reproductive isolation.
A. postzygotic B. allopatric C. prezygotic D. sympatric E. outgroup
Which group includes organisms that are unicellular, have two flagella and contain chlorophyll a & c?
A. foraminifera B. dinoflagellates C. euglenoids D. choanoflagellates
Which of the following would be the best approach to allow a biologist studying the evolution of four similar species of birds to choose the correct phylogenetic tree from all possible phylogenetic hypotheses?
a. Constructing the tree that connects the species using the fewest number of branches b. Comparing the entire genomes of the species and arranging species within the phylogeny based on genome similarity c. Determining which species can interbreed and concluding that those that can evolved from a common ancestor most recently d. Choosing the tree that has the most evolutionary changes, as this would be the most likely scenario to produce four distinct species e. Constructing phylogenetic trees consistent with DNA sequence comparisons among the species and then choosing the tree that involves the fewest number of evolutionary changes from a common ancestor to the current species
What is an example of a +/+ interaction?
A. competition B. mutualism C. commensalism D. parasitism E. ammensalism