Yes! By default discussion questions are sorted by 'Top Post' but the sort order can be changed to either 'Most Recent Activity' or 'Latest Post.'
To sort by Latest Post, navigate to the list of discussion you would like to sort and select the sort dropdown in the upper left side of the thread area.
Once the dropdown is clicked you will see options for both 'Latest Post' and 'Most Recent Activity.' Latest post will sort the list in chronological order starting with the most recent post and Most Recent Activity will sort the list with discussion questions that have been interacted with (replied to, commented on, etc.) at the top.