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Table 1 Chromosomal bands smaller than 1.0 Mb in size, according to UCSC Genome Browser (GRCh38/hg38) assembly are listed and compared to the size calculated based on ISCN (2020) idiograms (see Additional file 1: Table 1)

Chromosome	Bands smaller than 1.0 MB	Mb in UCSC	Mb acc. to ISCN	GTG banding color
#1	1p31.2	0.8	1.79	Dark
	1q42.11	0.5	2.15	Light
#2	2q23.2	0.6	1.90	Dark
	2q36.2	0.9	0.76	Light
#3	3p21.33	0.5	3.00	Light
	3p21.31	0.1	1.91	Light
	3p11.2	0.7	2.45	Light
	3q12.2	0.9	1.63	Dark
#5	5q12.2	0.3	1.96	Light
#6	6q11.2	0.1	2.13	Light
	6q22.2	0.2	2.66	Light
	6q23.1	0.9	3.72	Light
#7	7p15.1	0.9	7.77	Light
	7q22.2	0.7	2.78	Dark
#8	8q11.22	0.4	5.43	Dark
	8q12.2	0.7	2.00	Light
	8q21.12	0.1	2.29	Light
	9p11.1	0.8	2.19	Dark
#10	10p15.2	0.8	1.36	Dark
	10p12.32	0.1	0.82	Light
	10q24.33	0.9	1.09	Light
#11	11q22.2	0.7	1.63	Light
#12	12q24.12	0.6	1.66	Dark
#13	13q14.12	0.6	1.69	Dark
#14	14q32.32	0.8	2.18	Dark
#17	17q21.1	0.4	3.23	Light
	17q23.1	0.7	2.98	Light
	17q25.2	0.4	0.99	Dark
#19	19q13.13	0.4	4.29	Light
#20	20q13.11	0.4	1.94	Light
Y	Yp11.32	0.3	4.09	Light
	Yp11.31	0.3	3.71	Dark
	Yp11.1	0.1	2.23	Dark
	Yq11.1	0.2	2.23	Dark
Overall	34 subbands	17.8	84.64	14 Dark 20 Light

ISSN: 1755-8166