Dengue fever rarely occurs in the continental US. However, between March and November 2010, 66 locally acquired dengue cases wer
e associated with Key West, FL. This is an example of: a. Epidemic disease b. Pandemic disease c. Endemic disease d. Hyper-endemic disease e. Sporadic disease
Dengue fever is an epidemic disease because "epi" means upon, it refers to the instantaneous spread of infectious disease to a large number of people in a given population within a particular period of time.
In the question provided, the location of the people is continental US, the time periods are March and November 2010, with 66 locally acquired dengue cases.
Every cell in your body has the same genes/DNA but, the gene expression process decides which genes are active in which cells which is how each cell type gets it properties.