convergent evolution

For this OPTIONAL assignment, be sure that you follow the standards of academic writing. The assignment consists of a 1-page essay about a topic of your choice based on the lectures covered in the midterm (write about convergent evolution). Your essay will require a brief introduction, a concise and focused claim about the topic selected, two to three main points you will address, solid reasoning, and textual evidence along with an explanation of its significance. 
Requirement: Single-spaced. Times New Roman 12-point font. All citations will be MLA parenthetical citation. Include an additional References page.
Citing sources: correct and complete citation of sources is vital. Failure to properly cite your sources amounts to plagiarism. For example, in-text citations should look like this: