# Same cut, a thousand names: renaming, relabelling and the shrinking gene pool

> Renaming clones, relabelling cuts and reusing famous names make the market look far more diverse than it is. Genetic studies find the same plant sold under different names and different plants sold under one name: in one study 35 % of comparisons put a sample closer to a differently named sample than to its namesakes, and in Nevada 637 recorded names (396 after cleaning) covered three chemical profiles. Hidden sameness makes breeders cross near-identical material while believing they're adding diversity. GenetixBay's answer is the GB-ID: a permanent record tied to the plant, its source and its evidence, not to its name.

- Canonical: https://genetixbay.com/knowledge/genetics-history/same-cut-a-thousand-names.html
- Category: Genetics history · Level: Intermediate
- Evidence: Supported · Status: Draft: awaiting expert review (some figures are being checked)
- Stage: Any stage · Systems: Any system
- Updated: 2026-10-31 · Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay Knowledge Base (genetixbay.com/knowledge)"

## Questions and answers

**Are different strain names really different plants?** Different strain names are often not different plants. In a 2015 genetic study, 35% of comparisons put a sample closer to a differently named sample than to its namesakes, and a 2019 study found two differently named samples from one outlet with identical [genotypes](https://genetixbay.com/knowledge/glossary/genotype.md). A name is a label, not a genotype; only lineage records or DNA comparison show plants differ.

**Why do so many strains seem to be the same plant?** So many strains seem to be the same plant because many are. Cuts get renamed as they pass hand to hand, popular clones are rebranded as new, and unrelated crosses borrow famous names. In Nevada's medical market, 637 recorded names (396 after cleaning) covered just three chemical profiles. Breeders crossing [renamed cuts](https://genetixbay.com/knowledge/glossary/renamed-cut.md) are often working with the same few parents.

**Do growers rename clones?** Growers do rename clones, sometimes by accident and sometimes deliberately. A cut passed on loses its label and gets a new name, a popular clone is rebranded to look exclusive, and tags fall off in mother rooms and nurseries. Renaming changes nothing in the plant but erases its history. Good practice is to keep the arriving name and add a qualifier.

**Is the same cut sold under different names?** The same cut is sold under different names, and genetic studies have documented it. One 2019 study of 122 retail samples found two samples sold under different names from the same outlet with identical genotypes, and only 4 of 30 named strains assigned consistently. Small marker sets can call close relatives identical, so a match needs a reference sample to confirm.

**What studies show cannabis strains are mislabelled?** Studies showing cannabis strains are mislabelled include Sawler 2015 (names often fail to reflect genetic identity), Schwabe and McGlaughlin 2019 (outliers in most of 30 retail strains), Watts 2021 (same-named pairs as distant as differently named ones), Reimann-Philipp 2020 (637 Nevada names, three chemical profiles) and Borin 2025 (European seed probably mislabeled). Most are small studies, but they agree.

**How does renaming strains hurt cannabis [genetic diversity](https://genetixbay.com/knowledge/glossary/gene-pool.md)?** Renaming hurts genetic diversity by hiding sameness, not by changing [genes](https://genetixbay.com/knowledge/glossary/gene.md). Breeders who cross two 'different strains' that are actually one cut are [inbreeding](https://genetixbay.com/knowledge/glossary/inbred-line.md) while believing they [outcross](https://genetixbay.com/knowledge/glossary/outcross.md), so the hybrid pool folds back on a few parents, and originals drop out of circulation when renamed cuts replace them. This dilution is the founder's view, consistent with the evidence but not directly measured.

**How can I tell if two strains are the same cut?** To tell if two strains are the same cut, compare their documented sources and chain of custody first, then lab-tested chemistry, and for important plants a DNA comparison against a reference sample. A name or a THC number proves nothing. Even a small-marker genetic match can mistake close relatives for one plant, so treat it as strong evidence only alongside a reference.

**What is a [GB-ID](https://genetixbay.com/knowledge/glossary/gb-id.md)?** A GB-ID is GenetixBay's permanent identifier for a cannabis line, cut, batch or plant. It never changes and is never reused, whatever the plant is later called. Aliases are recorded with who used them and when, same-named lines from different sources stay separate, lineage claims carry evidence levels, and lab-tested [terpene profiles](https://genetixbay.com/knowledge/glossary/terpene-profile.md) sit on the record.

**Short answer.** A name costs nothing to change, and the plant doesn't change with it. Genetic studies keep finding the **same genotype under different names** and **different genotypes under one name** [1][2][3]. In Nevada's medical market, **637 recorded names** (396 after cleaning up spellings and obvious duplicates) sat on just **three** chemical profiles [4]. The shelf [looks](https://genetixbay.com/knowledge/glossary/bag-appeal.md) diverse; the gene pool underneath is narrower than the menu, and renaming hides how narrow. GenetixBay's answer is the GB-ID: a permanent record tied to the plant and its evidence, not to whatever it's called this year.

> **House position (founder's view).** "Same cut, a thousand names" is out of hand, and it's part of why everything tastes the same: everything is being replaced or hybridised with similar material, and the gene pool is getting diluted. The studies below back the first half directly (names hide sameness). The dilution half is supported by evidence of narrow commercial chemistry and endangered [landraces](https://genetixbay.com/knowledge/glossary/landrace.md), but no one has yet measured commercial genetic diversity over time, so we label it carefully.

## How one cut becomes a thousand names

These are practices, seen across markets. None needs bad intent; several often involve it.

| Practice | What happens | What it does to the record |
|---|---|---|
| **Renaming a clone** | A cut is passed on, the label is lost or dropped, and it gets a new name at the next stop | One genotype, several names |
| **Rebranding a popular cut** | A well-known clone is sold under a fresh name so it looks new or exclusive | One genotype, several names; the original's history disappears |
| **Borrowing a famous name** | An unrelated cross or seedling is sold under a name buyers already want | Several genotypes, one name |
| **Seed lines sold as one "strain"** | Every seed is a different genotype, but all share the name | Many genotypes, one name |
| **"The original cut" claims** | A cut is called the original without a chain of custody | An unverifiable claim attached to a name |
| **Menu relabelling** | Retail menus rename or regroup product to match demand or an "indica/sativa" slot | Names that track marketing, not plants |
| **Mix-ups** | Tags fall off in mother rooms, nurseries and supply chains | Honest errors that look like everything above |

The International Code of Nomenclature for Cultivated Plants says a cultivar name should be unique and not misleading [11]. Most cannabis naming has never been held to it, because for decades it couldn't be: under prohibition, a name passed by word of mouth was the only record there was.

## What the genetic studies found

| Study | Material | Finding |
|---|---|---|
| Sawler et al. 2015 [1] | 81 drug-type and 43 hemp samples, 14,031 [SNPs](https://genetixbay.com/knowledge/glossary/snp.md) | In **6 of 17 comparisons (35 %)**, samples were genetically closer to samples with *different* names than to samples sharing their name. A sample sold as 100 % sativa was nearly identical (IBS = 0.98) to one sold as 100 % indica. The authors: genetic identity "cannot be reliably inferred by its name" |
| Schwabe & McGlaughlin 2019 [2] | 122 retail samples of 30 named strains, three US states, 10 microsatellites | Only **4 of 30** strains gave a consistent genetic assignment across all their samples. Two samples sold under **different names** (Larry [OG](https://genetixbay.com/knowledge/glossary/og.md) and Tahoe OG) from the same outlet had **identical** genotypes. The authors: inconsistency "is evident and is not limited to a single source" |
| Watts et al. 2021 [3] | 297 samples with chemistry, 137 genotyped at 116,296 SNPs | Pairs of samples with the **same** cultivar name (e.g. OG Kush) were often as genetically and chemically distant as pairs with different names |
| Reimann-Philipp et al. 2020 [4] | Nevada medical lab records, January 2016 to June 2017 | **637** names; **396** after merging misspellings and obvious duplicates; **three** terpene-defined chemical clusters. The authors: "many different names are assigned to basically the same products" |
| Schwabe et al. 2022 [5] | 32 retail samples of four names from 21 Colorado outlets | Most samples within a name matched, but each name had outliers, and **55 untrained panellists could smell the difference** between an outlier and its namesakes |
| Borin et al. 2025 [7] | 171 plants from 20 seed varieties bought from European distributors | Results "revealed doubts regarding the quality and identity" of some seed on the market, "probably mislabeled" or poorly produced |

Two honest caveats. Most of these studies are small, and [genotyping](https://genetixbay.com/knowledge/glossary/genotyping.md) with a few markers can call two close relatives "identical" (see [what a DNA test can and can't prove](https://genetixbay.com/knowledge/breeding/genotyping-what-tests-prove.md)). And some names hold up well: in [5], six of seven Blue Dream samples were one genotype. The pattern isn't "every name is false". It's that **a name alone tells you nothing you can check**.

## Why renaming dilutes the gene pool

Renaming doesn't change a single gene. The damage is to what breeders *think* they're working with.

1. **False diversity.** A breeder who crosses "two different strains" that are the same cut, or parent and child under new names, is inbreeding while believing they're outcrossing. Multiply that across a market and the hybrid swarm keeps folding back on the same few parents (see [how hybrid strains emerged](https://genetixbay.com/knowledge/genetics-history/how-hybrid-strains-emerged.md)).
2. **The shelf converges.** Commercial THC-dominant flower in six US states fell into three [terpene](https://genetixbay.com/knowledge/glossary/terpene.md) groups, two of them holding about 87 % of samples [6]; North American licensed-producer material clusters into a handful of chemotype-linked groups [8]; and the Nevada data show the same few profiles hiding behind hundreds of names [4]. That's the chemistry of a narrow pool wearing many labels (see [why everything tastes the same](https://genetixbay.com/knowledge/genetics-history/why-everything-tastes-the-same.md)).
3. **Originals get lost.** When a renamed cut displaces the original name, the original's history, and sometimes the original plant, drops out of circulation. Nobody hunts for a line they think they already have.
4. **Distinct material is replaced, not added.** The traditional high-THC domesticates are endangered, with decades of hybridising having "obliterated differences" between them [9]. New names on old [hybrids](https://genetixbay.com/knowledge/glossary/hybrid.md) don't replace what's lost at source.

## The GB-ID answer

A GB-ID is GenetixBay's **permanent identifier** for a line, a cut, a batch or a plant. It never changes and is never reused, whatever the plant is called.

- **The record follows the plant, not the name.** A cut keeps one GB-ID however many names it picks up. Aliases are recorded, with who used them and when.
- **Same name, different source, different record.** Two lines sharing a name are linked as `shares_name`, never merged on name alone (see [why strain names are unreliable](https://genetixbay.com/knowledge/genetics-history/why-strain-names-are-unreliable.md)).
- **Claims carry evidence levels.** "The original cut" is an [L0](https://genetixbay.com/knowledge/glossary/evidence-levels-l0-l4.md) claim until there's chain of custody, grow-out evidence or a DNA match to a reference sample (L4). See [documenting lineage evidence](https://genetixbay.com/knowledge/breeding/documenting-lineage-evidence.md).
- **Chemistry, not hype.** Lab-tested terpene profiles sit on the record, so a genuinely different line can be found by what it is.
- **Duplicates come out in the open.** When two GB-IDs turn out to be one genotype, the evidence is added and the records are linked as the same plant, with both names kept as aliases.

## For growers and breeders

1. Ask where a cut came from and who had it before. A name with no history is a claim.
2. Before crossing two "different" lines, compare their records and, for important parents, their genotypes.
3. If you rename nothing, you're already ahead: keep the name a cut arrived with and add your selection as a qualifier (see [naming ethics](https://genetixbay.com/knowledge/breeding/record-keeping-naming-ethics.md)).
4. Register cuts and males with full history, including the names they've carried.

## Common mistakes

- Assuming two names are two plants because the vendors are different.
- Assuming the same name is the same plant because the menu says so.
- Treating a small-marker "match" as proof of identity without a reference sample.
- Treating every name as a lie. Some are consistent; the point is to check.

## Evidence

- Same name hiding different genotypes: *Supported* by several independent studies [1][2][3][5].
- Different names on the same genotype: *Supported* [1][2][4], with small samples.
- Names overstating chemical diversity: *Supported* [4][6].
- Narrow commercial gene pool and endangered landraces: *Supported* [6][8][9][10].
- Renaming as a cause of gene-pool dilution: founder's view, consistent with the evidence above but *not directly measured*.

## Sources

1. Sawler J, Stout JM, Gardner KM, et al. 2015. The genetic structure of marijuana and hemp. PLoS ONE 10(8):e0133292. https://doi.org/10.1371/journal.pone.0133292
2. Schwabe AL, McGlaughlin ME. 2019. Genetic tools weed out misconceptions of strain reliability in Cannabis sativa: implications for a budding industry. Journal of Cannabis Research 1:3. https://doi.org/10.1186/s42238-019-0001-1
3. Watts S, McElroy M, Migicovsky Z, Maassen H, van Velzen R, Myles S. 2021. Cannabis labelling is associated with genetic variation in terpene synthase genes. Nature Plants 7:1330-1334. https://doi.org/10.1038/s41477-021-01003-y
4. Reimann-Philipp U, Speck M, Orser C, et al. 2020. Cannabis chemovar nomenclature misrepresents chemical and genetic diversity; survey of variations in chemical profiles and genetic markers in Nevada medical cannabis samples. Cannabis and Cannabinoid Research 5(3):215-230. https://doi.org/10.1089/can.2018.0063
5. Schwabe AL, Naibauer SK, McGlaughlin ME, Gilbert AN. 2022. Human olfactory discrimination of genetic variation within Cannabis strains. Frontiers in Psychology 13:942694. https://doi.org/10.3389/fpsyg.2022.942694
6. Smith CJ, Vergara D, Keegan B, Jikomes N. 2022. The phytochemical diversity of commercial Cannabis in the United States. PLOS ONE 17(5):e0267498. https://doi.org/10.1371/journal.pone.0267498
7. Borin M, Scariolo F, Cappello Fusaro M, et al. 2025. Genotyping of commercial European Cannabis seeds based on multiple mapped marker loci: a comparative study of drug and hemp varieties. Plants 14(19):3050. https://doi.org/10.3390/plants14193050
8. Henry P, Khatodia S, Kapoor K, et al. 2020. A single nucleotide polymorphism assay sheds light on the extent and distribution of genetic diversity, population structure and functional basis of key traits in cultivated north American cannabis. Journal of Cannabis Research 2:26. https://doi.org/10.1186/s42238-020-00036-y
9. McPartland JM, Small E. 2020. A classification of endangered high-THC cannabis (Cannabis sativa subsp. indica) domesticates and their wild relatives. PhytoKeys 144:81-112. https://doi.org/10.3897/phytokeys.144.46700
10. Lynch RC, Vergara D, Tittes S, et al. 2016. Genomic and chemical diversity in Cannabis. Critical Reviews in Plant Sciences 35(5-6):349-363. https://doi.org/10.1080/07352689.2016.1265363
11. Brickell CD, et al. (eds). 2016. International Code of Nomenclature for Cultivated Plants, 9th edition. Scripta Horticulturae 18. ISHS. https://www.ishs.org/scripta-horticulturae/international-code-nomenclature-cultivated-plants-ninth-edition