genetic defect

NOUN
14 LETTERS · STARTS WITH G

genetic defect is a valid 14-letter word worth 22 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
G2E1N1E1T1I1C3D2E1F4E1C3T1
2 + 1 + 1 + 1 + 1 + 1 + 3 + 0 + 2 + 1 + 4 + 1 + 3 + 1 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does genetic defect mean?