Fig. 5.

The behaviour of the C chromosome during diakinesis in the MAALs. It either remains unpaired as a univalent (I), or pairs with one A chromosome forming a heteromorphic bivalent, while the other A chromosome remains as a univalent (II + I), or appears as part of a trivalent when pairing with a pair of A chromosomes with median/sub-median centromeres (III¹), sub-median/sub-terminal centromeres (III²), or the nucleolar organizers (III³), or appears as part of a pentavalent (V) when pairing with two pairs of A chromosomes. In the case of C4d and C8, two trivalents representing short and long arm associations of the C chromosome with the nucleolar A pair are depicted. Scale bar = 10 µm.