Structure of the intergenic spacers in chicken ribosomal DNA

Table 1 Tandem repeats in chicken IGS

IGS repeat block	Repeat name	Repetitive unit size (bp)	(C+G) content (mean %)	Nucleotide diversity in the repeat sequences in WAG137G4_utg0 contig (%)
5′ repeat block	Svetlana (SV)	137–158	78	20
5′ repeat block	Alsu (AL)	209–303	15	18
Central repeat block	Elena (EL)
	EL1	94	75	4
	EL2A	93	72	3
	EL2B	93	71	6
	EL2C	92	72	0
	EL2D	92	71	3
	EL2F	89/93	72	17
	EL3A	93	71	3.5
	EL3B	92	69	5
	EL3C	93	69	3
	EL3D	93	67	7
3′ repeat block	Valerie (VAL)
	VAL1	85–95	77	15
	VAL2	83	68	0
	VAL3	92	80	0
	VAL4	82/90	79	10
	VALF	72–92	69	33

ISSN: 1297-9686