I want you to either: A) identify an animal species that exhibits sexual dimorphism, classify the dimorphism (i.e. color, size, ornamentation), describe the male and female of the species and who has

I want you to either: 

A) identify an animal species that exhibits sexual dimorphism, classify the dimorphism (i.e. color, size, ornamentation), describe the male and female of the species and who has the dimorphism, and postulate how the dimorphism evolved and what function it serves, 

or 

B) identify two closely related species that have undergone speciation, classify the speciation as allopatric or sympatric, and show how the speciation event occurred.  

You only have to answer 1 of the 2 questions.  Do not use examples from the book or powerpoints and if you utilize outside sources, websites, or journal articles, please cite them appropriately using APA format and following the citation format of the Journal of Ecology.