accessory chromosome

(redirected from unpaired chromosome)
Also found in: Medical.

accessory chromosome

[ak′ses·ə·rē ′krōm·ə‚sōm]
(cell and molecular biology)
References in periodicals archive ?
Red Russian genotypes monosomic for chromosome H transmit the unpaired chromosome through the egg at a frequency of only 0.
However, some aneuploid plants with chromosome number other than 42 may occur due to unpaired chromosomes in a small number of pollen and egg mother cells as reported in the Largo SHW line (Joppa and Williams, 1982).
He concluded that the unpaired chromosomes originated from D.