Table 1. SOLiD 4 read counts and mapping statistics for individual samples.

Sample	Total reads	Mapped reads	Mapping rate	Total reads passing filters	Counted onexons	Counted on introns	Counted on intergenic regions
PND_7_s1	45,706,071	21,230,399	47%	14,518,593	9,476,631	4,001,849	1,040,113
PND_7_s2	46,592,933	16,249,678	35%	10,811,100	6,911,439	3,074,225	825,436
PND_14_s1	33,787,664	16,249,484	48%	11,373,935	7,657,560	2,599,696	1,116,679
PND_14_s2	26,776,971	13,525,537	50%	8,652,432	6,946,490	1,037,577	668,365
PND_17_s1	54,374,927	25,471,965	46%	15,825,273	13,133,830	1,490,487	1,200,956
PND_17_s2	16,733,599	7,235,322	43%	4,611,709	3,890,612	404,87	316,227
PND_21_s1	26,409,512	8,475,148	32%	5,700,864	3,961,522	1,006,336	733,006
PND_21_s2	23,544,136	11,445,588	49%	7,403,489	6,150,493	635,138	617,858
PND_28_s1	29,895,585	15,482,573	52%	10,513,142	8,709,227	814,463	989,452
PND_28_s2	23,640,573	9,106,849	39%	6,141,624	5,064,489	467,358	609,777