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Table 2.

Number of Nucleotides Surveyed, Conserved, and Percent Sequence Conservation of Intergenic and Intronic Regions Analyzed in This Study

Intergenic region	Drosophila melanogaster bp surveyed	Drosophila virilisbp surveyed	Bp conserved	Drosophila melanogaster % conserved	Drosophila virilis % conserved
achaete-scute	2151	5434	559	26	10
Antennapedia	3894	3624	799	21	22
bride of sevenless	1458	1730	194	13	11
brown	269	286	113	42	40
decapentaplegic	12271	15,562	4173	34	27
dopadecarboxylase	590	523	178	30	34
D-mef2	10117	14,083	1407	14	10
e74	294	331	120	41	36
engrailed	2222	2716	738	33	27
frmf-amide	2072	2623	438	21	17
fused	347	275	179	52	65
fushi tarazu	385	464	135	35	29
glass	1779	1281	488	27	38
hairy	11,942	12,673	3549	30	28
hunchback	3423	3624	808	24	22
knirps	1631	1559	327	20	21
paramyosin	1444	1803	295	20	16
prospero	5525	7714	2053	37	27
runt	5995	6170	498	8	8
tailless	3646	3906	1095	30	28
teashirt	787	846	416	53	49
tinman	1531	1213	445	29	37
troponin T	427	389	64	15	16
twist	1322	1153	301	23	26
wingless	3979	5213	973	24	19
zerknullt	373	397	156	42	39
Intergenic total	79,874	95,592	20,501	26	21
Intronic region	Drosophila melanogaster bp surveyed	Drosophila virilis bp surveyed	Bp conserved	Drosophila melanogaster % conserved	Drosophila virilis % conserved
Antennapedia	2648	2861	881	33	31
bride of sevenless	1308	1951	399	31	20
corkscrew	521	1102	153	29	14
decapentaplegic	832	929	435	52	47
engrailed	1026	1271	416	41	33
glass	68	111	36	53	32
Gpdh	1448	2346	222	15	9
hunchback	2630	3574	892	34	25
knirps	614	705	273	44	39
miniparamyosin	1002	1563	251	25	16
myosin light chain	1223	1187	400	33	34
paralytic	173	171	80	46	47
pdm-2	708	642	215	30	33
prospero	4603	5511	1327	29	24
rough	2659	4239	627	24	15
sevenless	2266	2606	262	12	10
single minded	3119	4777	851	27	18
Staufen	1170	1628	349	30	21
tinman	309	381	158	51	41
trithorax	5162	4988	871	17	17
vestigial	652	696	316	48	45
Intronic total	34141	43239	9414	28	22
Grand total	114015	138831	29915	26	22

[i] The amount of DNA conserved is by definition the same in each species, thus the size differences are due to length changes in unalignable sequences. The species with the larger regional size is shown in bold.