Non-coding region · mtDNA statistics

D-loop

Control region (D-loop). Length, base composition and strand skews in 1,976 species, by taxon and species by species.

D-loop in all species

Every parameter summarised over 1,976 species

D-loop in all species
Parameter	Species	Mean	SD	CV	Min	Median	Max	r	p
GC %(G + C) / (A + C + G + T)	1,976	38.13%	7.82	0.205	0.00%Tragulus napu	38.30%	100.00%Ara militaris	0.15	4.7 × 10⁻¹²
AT %(A + T) / (A + C + G + T)	1,976	61.87%	7.82	0.126	0.00%Ara militaris	61.70%	100.00%Tragulus napu	−0.15	4.7 × 10⁻¹²
A %A / (A + C + G + T)	1,976	31.53%	6.86	0.218	0.00%Lutjanus analis	31.52%	100.00%Tragulus napu	−0.06	0.007
T %T / (A + C + G + T)	1,976	30.34%	6.64	0.219	0.00%Tragulus napu	30.45%	100.00%Lutjanus analis	−0.12	1.1 × 10⁻⁷
G %G / (A + C + G + T)	1,976	14.19%	3.00	0.211	0.00%Tragulus napu	14.39%	46.38%Strigops habroptila	0.00	0.96
C %C / (A + C + G + T)	1,976	23.94%	7.47	0.312	0.00%Tragulus napu	23.26%	100.00%Ara militaris	0.16	5.4 × 10⁻¹³
GC skew(G − C) / (G + C) on the L strand	1,956	−0.245	0.122	–	−1.000Ara militaris	−0.235	+0.600Strigops habroptila	−0.17	1.0 × 10⁻¹³
AT skew(A − T) / (A + T) on the L strand	1,965	+0.019	0.125	–	−1.000Lutjanus analis	+0.020	+1.000Tragulus napu	0.05	0.02
Length (bp)Length in base pairs	1,976	1,129	487.7	0.432	1Coryphaena equiselis	1,051	4,608Drosophila melanogaster	0.11	7.5 × 10⁻⁷

D-loop by class

GC content of the D-loop, % of A + C + G + T

Parameter

Chart

D-loop by class

ActinopterygiiRay-finned fishes	772	36.00%	8.03	0.223	0.00%Coryphaena equiselis	36.72%	100.00%Polyprion americanus	−0.08	0.02
MammaliaMammals	553	40.12%	4.65	0.116	0.00%Tragulus napu	40.53%	50.39%Bassaricyon gabbii	0.37	1.1 × 10⁻¹⁹
AvesBirds	368	43.16%	7.97	0.185	21.77%Eremophila alpestris	42.34%	100.00%Ara militaris	0.10	0.05
ReptiliaReptiles	116	34.44%	5.62	0.163	25.07%Gavialis gangeticus	33.13%	53.33%Gonatodes albogularis	−0.25	0.007
ChondrichthyesSharks and rays	73	34.89%	8.02	0.230	27.31%Bathyraja albomaculata	33.93%	100.00%Galeorhinus galeus	0.17	0.14
AmphibiaAmphibians	44	34.87%	2.47	0.071	27.32%Xenopus laevis	34.91%	38.38%Microhyla ornata	−0.12	0.45
MalacostracaCrustaceans	24	22.51%	4.29	0.191	16.52%Trachypenaeus curvirostris	21.65%	33.05%Trypaea australiensis	0.30	0.16
CephalaspidomorphiLampreys	8	33.93%	3.94	0.116	29.85%Lethenteron camtschaticum	33.52%	42.57%Petromyzon marinus	0.41	0.32
BivalviaBivalves	7	32.37%	10.63	0.328	10.06%Amusium pleuronectes	36.31%	40.19%Ylistrum balloti	0.23	0.62
SarcopterygiiLobe-finned fishes	4	36.14%	1.16	0.032	34.83%Latimeria chalumnae	36.19%	37.34%Protopterus annectens	–	–
EchinoideaSea urchins	2	50.41%	2.34	0.046	48.76%Heliocidaris crassispina	50.41%	52.07%Strongylocentrotus purpuratus	–	–
CephalopodaCephalopoda	2	31.83%	4.24	0.133	28.83%Ommastrephes bartramii	31.83%	34.83%Uroteuthis duvaucelii	–	–
InsectaInsects	1	4.28%	–	–	4.28%Drosophila melanogaster	4.28%	4.28%Drosophila melanogaster	–	–
GastropodaGastropoda	1	24.85%	–	–	24.85%Littorina saxatilis	24.85%	24.85%Littorina saxatilis	–	–
PolychaetaPolychaeta	1	27.52%	–	–	27.52%Terebellides stroemii	27.52%	27.52%Terebellides stroemii	–	–

Every species

Base counts on the L strand as deposited in RefSeq. Download all 1,976 rows as CSV

Loading 1,976 species…

More about this region

D-loop gene page D-loop in the taxa table Plot its GC content against lifespan