univalent chromosome

20 LETTERS · STARTS WITH U

univalent chromosome is a valid 20-letter word worth 31 points in Scrabble and 38 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

U1N1I1V4A1L1E1N1T1C3H4R1O1M3O1S1O1M3E1

1 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 3 + 1 =31 PTS

DOUBLE WORD → 62TRIPLE WORD → 93

MEANING

What does univalent chromosome mean?