Crossword Puzzle Modified, say

Clue: Modified, say

Modified organisms (ECADS with 5 letters)
Authority on sayings of Mohammed (ISNAD with 5 letters)
TV neigh-sayer? (MRED with 4 letters)
Collected sayings (ANA with 3 letters)
"Aack!" sayer, in the comics (CATHY with 5 letters)
How Sayers finished "The Bone" (OFCONTENTION with 12 letters)
Modified boo (HISS with 4 letters)
Cause of Philip Boyes's death in a Dorothy Sayers novel (ARSENIC with 7 letters)
Sayr Usa locale (ASIA with 4 letters)
Football Hall of Famer Sayers (GALE with 4 letters)