The answers to the clues below should suggest a well-known list. Can you determine what it is?

1. Unmarried2. Dried grape
3. True - genuine
4. Kind of slipper
5. Child of an uncle or aunt
6. Evolutionary gap - informally
7.Ten Commandments delivery site

HINT:
There are seven of them.

Answers:

1. Single
2. Raisin
3. Sincere
4. Moccasin
5. Cousin
6. Missing link
7. Mt. Sinai

SIN is hidden in each clue answer -  suggesting the Seven Deadly Sins.

Credit:
NY Times Crossword
December 29, 1996
B. White
A HOST OF SINS