Raja polystigma
Speckled ray
GC content
40.91%
Whole genome
Non-coding
1,314 bp
D-loop 1,253 bp
Where Speckled ray sits among 2,335 species
Whole-genome GC content against maximum lifespan. Speckled ray has the 1,515th longest lifespan of them.
- This species
- Other sharks and rays
- Other classes
Base composition
Whole genome16,918 bp
- GC skew (G − C) / (G + C)
- −0.321
- AT skew (A − T) / (A + T)
- +0.037
About this record
- Lifespan source
- FishBase v26.06
- Based on
- an observed animal, origin not stated
- Data quality
- questionable
- Licence
- CC BY-NC 4.0
- Status
- New in build 2
- In the database since
- build 2 (2026-11-13)
The lifespan value is for non-commercial use only; the genome data is not restricted by it.
Every change against the 2015 build is in the changelog download.
Composition by region
Reference (L) strand as deposited in RefSeqWhole genome16,918 bp
Protein-coding11,411 bp
12S rRNA967 bp
16S rRNA1,681 bp
All tRNA1,545 bp
D-loop1,253 bp
Genes and regions
Select a column to sort; select a gene to compare it across species| Composition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| ND1NADH dehydrogenase subunit 1 | 975 bp | 43.69% | −0.413 | +0.009 | |||||
| ND2NADH dehydrogenase subunit 2 | 1,046 bp | 43.40% | −0.542 | +0.074 | |||||
| COX1Cytochrome c oxidase subunit I | 1,557 bp | 42.90% | −0.210 | −0.089 | |||||
| COX2Cytochrome c oxidase subunit II | 691 bp | 39.22% | −0.203 | +0.067 | |||||
| ATP8ATP synthase F0 subunit 8 | 168 bp | 35.12% | −0.593 | +0.046 | |||||
| ATP6ATP synthase F0 subunit 6 | 684 bp | 40.50% | −0.451 | −0.057 | |||||
| COX3Cytochrome c oxidase subunit III | 786 bp | 45.55% | −0.279 | −0.033 | |||||
| ND3NADH dehydrogenase subunit 3 | 349 bp | 44.70% | −0.385 | −0.150 | |||||
| ND4LNADH dehydrogenase subunit 4L | 297 bp | 45.79% | −0.456 | −0.081 | |||||
| ND4NADH dehydrogenase subunit 4 | 1,381 bp | 41.42% | −0.434 | −0.011 | |||||
| ND5NADH dehydrogenase subunit 5 | 1,836 bp | 40.96% | −0.455 | +0.039 | |||||
| ND6NADH dehydrogenase subunit 6 | 519 bp | 37.57% | −0.528 | +0.438 | |||||
| CYTBCytochrome b | 1,143 bp | 43.05% | −0.431 | −0.054 | |||||
| 12S rRNA12S ribosomal RNA | 967 bp | 41.57% | −0.095 | +0.115 | |||||
| 16S rRNA16S ribosomal RNA | 1,681 bp | 38.97% | −0.096 | +0.144 | |||||
| D-loopControl region (D-loop) | 1,253 bp | 33.04% | −0.304 | +0.004 |
Codon usage
Counts per codon, darker is more frequent3,809 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).
Phe F6.2%
UUU122
UUC114
Leu L17.7%
UUA133
UUG26
CUU148
CUC155
CUA186
CUG28
Ile I8.9%
AUU187
AUC151
Met M4.3%
AUA126
AUG37
Val V4.8%
GUU44
GUC55
GUA65
GUG17
Ser S6.7%
UCU47
UCC69
UCA87
UCG4
AGU19
AGC30
Pro P5.5%
CCU38
CCC75
CCA93
CCG5
Thr T7.8%
ACU51
ACC100
ACA138
ACG7
Ala A7.3%
GCU51
GCC137
GCA86
GCG4
Tyr Y3.2%
UAU49
UAC73
His H2.7%
CAU37
CAC64
Gln Q2.6%
CAA93
CAG7
Asn N3.9%
AAU58
AAC89
Lys K2.3%
AAA80
AAG7
Asp D1.8%
GAU27
GAC42
Glu E2.6%
GAA76
GAG22
Cys C0.6%
UGU11
UGC12
Trp W3.1%
UGA107
UGG12
Arg R1.8%
CGU13
CGC19
CGA33
CGG4
Gly G6.0%
GGU43
GGC82
GGA72
GGG33
Stop 0.2%
UAA9
UAG0
AGA0
AGG0
Genome map
38 annotated features in NC_037971.1Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.
- Protein-coding13
- rRNA2
- tRNA22
- D-loop1
- Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
- Middle ring: GC% of each gene against the whole genome (40.9%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).
All 38 features as a table
| Feature | Type | Start | End | Length | Strand | GC |
|---|---|---|---|---|---|---|
| tRNA-Phe | Transfer RNA | 1 | 69 | 69 bp | + | – |
| 12S rRNA | Ribosomal RNA | 70 | 1,036 | 967 bp | + | 41.6% |
| tRNA-Val | Transfer RNA | 1,037 | 1,108 | 72 bp | + | – |
| 16S rRNA | Ribosomal RNA | 1,109 | 2,789 | 1,681 bp | + | 39.0% |
| tRNA-Leu (UUR) | Transfer RNA | 2,790 | 2,864 | 75 bp | + | – |
| ND1 | Protein-coding gene | 2,865 | 3,839 | 975 bp | + | 43.7% |
| tRNA-Ile | Transfer RNA | 3,840 | 3,909 | 70 bp | + | – |
| tRNA-Gln | Transfer RNA | 3,909 | 3,980 | 72 bp | − | – |
| tRNA-Met | Transfer RNA | 3,982 | 4,050 | 69 bp | + | – |
| ND2 | Protein-coding gene | 4,051 | 5,096 | 1,046 bp | + | 43.4% |
| tRNA-Trp | Transfer RNA | 5,097 | 5,165 | 69 bp | + | – |
| tRNA-Ala | Transfer RNA | 5,167 | 5,235 | 69 bp | − | – |
| tRNA-Asn | Transfer RNA | 5,236 | 5,308 | 73 bp | − | – |
| tRNA-Cys | Transfer RNA | 5,341 | 5,407 | 67 bp | − | – |
| tRNA-Tyr | Transfer RNA | 5,408 | 5,477 | 70 bp | − | – |
| COX1 | Protein-coding gene | 5,479 | 7,035 | 1,557 bp | + | 42.9% |
| tRNA-Ser (UCN) | Transfer RNA | 7,037 | 7,107 | 71 bp | − | – |
| tRNA-Asp | Transfer RNA | 7,108 | 7,176 | 69 bp | + | – |
| COX2 | Protein-coding gene | 7,182 | 7,872 | 691 bp | + | 39.2% |
| tRNA-Lys | Transfer RNA | 7,873 | 7,945 | 73 bp | + | – |
| ATP8 | Protein-coding gene | 7,947 | 8,114 | 168 bp | + | 35.1% |
| ATP6 | Protein-coding gene | 8,105 | 8,788 | 684 bp | + | 40.5% |
| COX3 | Protein-coding gene | 8,791 | 9,576 | 786 bp | + | 45.6% |
| tRNA-Gly | Transfer RNA | 9,578 | 9,647 | 70 bp | + | – |
| ND3 | Protein-coding gene | 9,648 | 9,996 | 349 bp | + | 44.7% |
| tRNA-Arg | Transfer RNA | 9,997 | 10,065 | 69 bp | + | – |
| ND4L | Protein-coding gene | 10,066 | 10,362 | 297 bp | + | 45.8% |
| ND4 | Protein-coding gene | 10,356 | 11,736 | 1,381 bp | + | 41.4% |
| tRNA-His | Transfer RNA | 11,737 | 11,805 | 69 bp | + | – |
| tRNA-Ser (AGY) | Transfer RNA | 11,806 | 11,873 | 68 bp | + | – |
| tRNA-Leu (CUN) | Transfer RNA | 11,875 | 11,946 | 72 bp | + | – |
| ND5 | Protein-coding gene | 11,947 | 13,782 | 1,836 bp | + | 41.0% |
| ND6 | Protein-coding gene | 13,779 | 14,297 | 519 bp | − | 37.6% |
| tRNA-Glu | Transfer RNA | 14,299 | 14,367 | 69 bp | − | – |
| CYTB | Protein-coding gene | 14,371 | 15,513 | 1,143 bp | + | 43.1% |
| tRNA-Thr | Transfer RNA | 15,517 | 15,588 | 72 bp | + | – |
| tRNA-Pro | Transfer RNA | 15,597 | 15,665 | 69 bp | − | – |
| D-loop | Control region | 15,666 | 16,918 | 1,253 bp | – | 33.0% |