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Table 2 Karyotype asymmetry index, according to Stebbins (1971)

From: First report of bicolour FISH of Berberis diaphana and B. soulieana reveals interspecific differences and co-localization of (AGGGTTT)3 and rDNA 5S in B. diaphana

Chromosome ratio Percentage (arm ratio > 2:1)
0.00 0.01–0.05 0.51–0.99 1.00
<2:1 1A 2A 3A 4A
2:1–4:1 1B 2B 3B 4B
> 4:1 1C 2C 3C 4C
  1. Note: Cytotypes closer to 4C show greater asymmetry