Genre: 

    The genre is the different sorts of writing styles. Once you have your purpose established, you should choose a genre for your writing piece that best conveys that purpose across. For instance, in Writing for Engineers, the genre topics we touched upon were memos, technical descriptions, lab reports, and project proposals.

    The genre of a memo help the purpose of persuasion as the memo itself was a call to action. The genre of technical descriptions/analysis were the way to go if your purpose was solely to inform a certain group of people about something. The project proposal as a genre survived the purpose of persuasion as it introduced new ideas that would plan on changing old old problems.