accessory chromosome

20 LETTERS · STARTS WITH A

accessory chromosome is a valid 20-letter word worth 35 points in Scrabble and 38 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1C3C3E1S1S1O1R1Y4C3H4R1O1M3O1S1O1M3E1
1 + 3 + 3 + 1 + 1 + 1 + 1 + 1 + 4 + 0 + 3 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 3 + 1 =35 PTS
DOUBLE WORD → 70TRIPLE WORD → 105
MEANING

What does accessory chromosome mean?

1