Q1: Explain why the removal of great sharks poses a threat to bay scallops on the Atlantic Coast of North America, despite the fact that large sharks do not feed on scallops. Include the concept of a trophic cascade in your discussion. Q2: Explain how resource partitioning led to character […]

1) Why might you find that your DNA isolation might have multiple “perfect” matches (1.000) for more than one species? Given that 16S genes are used almost universally to discrimanate between species, How can you explain this result? 2) Why might you obtain a sequence trace that shows very strong […]

Evolutionary Biology in the age of Genomics- Q1. Phylogenetic trees- You are analyzing sequences sampled from four turtle species (A-D), considering a genomic region that is 75 base pairs long. You observe the following table of the number of substitutions between pairs of species:   A B C D A […]

Drug X is used to suppress the secretion of CRH. Two patients with hypersecretion of cortisol are given Drug X. Patient A’s cortisol secretion level remains elevated, but patient B’s cortisol secretion level falls to normal levels. 1. Determine which patient has primary hypercortisolism (if any) and which has secondary […]