A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Tridens strictus has left across the world's sequence archives.
At a glance
Marker genes1
GenBank sequences2
Countries1
The DNA barcodea real sequence read deposited for this species
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★ITS2
fungal barcode
06Genome at a glanceCCDB
The complete instruction manualTridens strictus carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Chromosomes2n = 40 n = 20
Ploidydiploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 401×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — GOULD, F.W. 1968. Chromosome numbers of Texas grasses. Canad. J. Bot. 46: 1315-1325.
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy89% within 1 km
≤100 m 717≤1 km 75≤10 km 23>10 km 76
891 georeferenced · 274 without coordinates
Open the mapobservation + sensor1 165
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy40% within 1 km
≤100 m 39≤1 km 83≤10 km 164>10 km 18
304 georeferenced · 290 without coordinates
Open the institutions mapphysical evidence594
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions43 of 62 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Bronx, US
79
Wuzhou, CN
76
Fort Worth, US
47
Austin, US
42
Chapel Hill, US
34
Saint Louis, US
33
Pittsburg, US
29
Jackson, US
26
US
23
Fayetteville, US
20
BAYLUlocation not on record
19
Bloomington, US
13
Little Rock, US
10
Chongqing Museumlocation not on record
9
Logan, US
8
Jena Microbial Resource Collectionlocation not on record
8
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
8
Durham, US
8
Emporia, US
7
Albuquerque, US
6
Tuscaloosa, US
6
EL PASO, US
6
Claremont, US
6
Bangkok, TH
5
GB
4
Conway, US
3
Tampa, US
3
University of Southern Mississippilocation not on record
3
GAlocation not on record
3
Miami, US
3
Valdosta State Universitylocation not on record
3
Tall Timbers Research Stationlocation not on record
3
Auckland, NZ
3
Riverside, US
2
Henderson State Universitylocation not on record
2
ASUlocation not on record
2
University of Tennessee at Chattanoogalocation not on record
2
Knoxville, US
2
Burlington, US
2
Conway, US
2
Canadian Department of Agriculturelocation not on record
1
Taipei, TW
1
LINUlocation not on record
1
Williamsburg, US
1
Kirksville, US
1
Dekalb, US
1
Springfield, US
1
DOI/NPS, Selma to Montgomery National Historic Traillocation not on record
1
Texas Lutheran Universitylocation not on record
1
University of Stellenboschlocation not on record
1
AUAlocation not on record
1
Long Beach, US
1
Chadron, US
1
Phoenix, US
1
Mississippi State, US
1
Lubbock, US
1
Flagstaff, US
1
Northridge, US
1
Appalachian State Universitylocation not on record
1
Edmonton, CA
1
Denton, US
1
DOI/NPS, Greenbelt Parklocation not on record
1
62 institutions · 592 of 594 vouchered records shown · 2 without an institution code
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 760 records↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype