The given sentence which is: “Mrs. Ames is seventy years old, yet she jogs everyday” falls to coordination. A coordination conjunction refers to 2 or more sentences being joined together using the FANBOY coordinating conjunctions. F is For, A is and, N is nor, B is but , O is or and Y is Yet.
Mrs. Ames is seventy years old – this is a one complete sentence.
She jogs everyday – this is also another complete sentence
Then it was joined together by the conjunction YET.