Comparison and morphological classification of macrochromosome pairs of 15 species belonging to five families of Gruiformes.

Legend: M, metacentric; A, acrocentric; SM, submetacentric;T, telocentric).Based on chromosome morphology, these species can be divided in five different groups, indicated by letters A-E (A = 1,2,4–6 biarmed and remaining acrocentric; B = 1–10 biarmed; C = 1,4,7 biarmed and remaining acrocentric,telocentric; D = 1–6 biarmed and remaining telocentric and E = 1 biarmed and remaining acrocentric). Gropus A-D show a higher number of biarmed macrochromosomes, while group E shows a higher number of acrocentric macrochromosomes.