If a question has an accepted answer and the question is deleted, what happens to the accepted answer and with the reputation coming from accepting that answer?

More specifically:

 1. Is the accept sign automatically removed when a question is deleted?
 2. It is known that reputation for answers [with score at least 3 and visible for at least 60 days](https://meta.stackexchange.com/questions/13762/do-you-lose-the-reputation-points-you-acquired-from-a-question-if-when-it-is-d#150096) is kept after the deletion. Does this include the +15 reputation point for accepted answer, or are these 15 reputation points removed on deletion regardless of the age of the answer (even if the score is ⩾ 3)?

This came up in a discussion in chat (moved from comments on a per-site-meta). Since it was not that easy to find examples of such posts, asking here seemed a better solution than experimenting by looking for posts, deleting and undeleting them, checking reputation, etc.

I found this related question: [Accepted answers to deleted questions don't have a checkmark](https://meta.stackexchange.com/q/125984). However, no definitive answer was posted there, only a few comments.