SAT - Essay
An extended analogy refers to the use of an extended metaphor or comparison. Extended analogies are used to compare two things in order to understand one of the two things better. The two things are alike and one of the two things are compared to a third thing, which gives more clarity on both the things being compared. For example, A is like B, B is like C so A is also like C.
When we use the word 'for example' in a sentence, the punctuation to be used after writing the word, for example, is a comma. Let us have a sentence to put this in context. There are so many resources on the web to study for the GMAT for example, Manhattan, Kaplan, QS LEAP, etc. If one chooses to write the short form for 'for example', it is written like this; e.g. It is an abbreviation for the Latin word exempli gratia.