Table 1. RNA-FISH analysis of transcription from neighbouring loci in homogametic nuclei.

Gene Pair	Distance apart (Mb)	Number of nuclei scored	% nuclei with coordinate transcription
Chicken Z
SMARCA2,PTPRD	2	98	96
BNC2, MLLT3	1.5	100	96
Platypus X5
MPDZ, NFIB	0.5	30	100
HSD17B4, SEMA6A	1.8	26	100
SLC1A1, SEMA6A	0.5	22	100