polyploidy
Let an agent explain polyploidy and its kinds, relay its role in plant evolution and agriculture, describe occurrence in animals and consequences in humans in general terms, and distinguish polyploidy from aneuploidy.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain polyploidy and its kinds, relay its role in plant evolution and agriculture, describe occurrence in animals and consequences in humans in general terms, and distinguish polyploidy from aneuploidy.
The state of having more than two complete sets of chromosomes, as in triploid, tetraploid, pentaploid, hexaploid, heptaploid and octoploid organisms, arising by whole genome duplication within a species as autopolyploidy or by hybridisation between species as allopolyploidy, common and often adaptive in plants, including many crops such as wheat, potato and banana, found in some animals, and in humans usually lethal in embryos, with diploid-triploid mosaicism as a rare survivable condition.
What it is for: Not applicable; a genetic state.
It can be explain kinds and origins; relay role in evolution and crops; describe human and animal cases in general terms; distinguish from aneuploidy.
Distinguishing features
Whole set multiplication
Common in plants
Speciation mechanism
Usually lethal in mammals
What it looks like
Not visible; detected by chromosome counts and genome analysis; polyploid plants are often larger.
Physical character
flowering plants with polyploid ancestry: nearly all share - ancient whole genome duplications
bread wheat ploidy: 6 sets - hexaploid
How it is recognised
More than two chromosome sets
Autopolyploidy, allopolyploidy, triploid to octoploid
Aneuploidy is an abnormal number of individual chromosomes; haploidy is one set
Related models
is a kind of - in registry terms
is a kind of - in registry terms
drives - in plants
is contrasted with - a change in single chromosomes
In practice
Families and kinds
autopolyploidy
allopolyploidy
triploidy, tetraploidy, pentaploidy, hexaploidy, heptaploidy, octoploidy
neopolyploidy in newly formed polyploids
paleopolyploidy from ancient duplications
polyploidy in animals such as some fish and amphibians
human triploidy and diploid-triploid mosaicism
polyploid cells in normal tissues such as liver
Standards and regulation
Plant variety and seed regulations for polyploid crops
Clinical genetics guidelines for human chromosomal conditions
Failure modes and hazards
Confusing polyploidy with aneuploidy
Overgeneralising from plants to animals
Agents giving personal genetic advice
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What polyploidy is.
Science.
Definition
Definition and kinds.
Definition
Definition.
- What is polyploidy, and how do autopolyploidy and allopolyploidy differ? definition
- Is the condition polyploidy or aneuploidy? boundary
Origins
Origins.
Origins
Origins.
- How does polyploidy arise through unreduced gametes, hybridisation and induced duplication? definition
- Which entry fits the specific mechanism? action
Plants Plants and crops.
Attribution.
Evolution
Evolution.
Evolution
Evolution.
- What role has polyploidy played in plant evolution and speciation, as research shows? provenance
- Which sources are cited? provenance
Crops
Crops and breeding.
Crops
Crops.
- Which crops are polyploid, and how is polyploidy used in breeding, including seedless fruit? provenance
- Which entry fits the specific crop? action
Animals Animals and humans.
Clinical.
Animals
Animals.
Animals
Animals.
- Where does polyploidy occur in animals, and why is it rare in mammals? provenance
- Which references are standard? provenance
Humans
Humans.
Humans
Humans.
- What are the consequences of triploidy and mosaicism in humans, in general terms? provenance
- Is the user asking about a personal or pregnancy result, which needs a genetic counsellor? boundary
Context Methods and history.
Context.
Methods
Detection.
Methods
Methods.
- How is ploidy determined by cytology, flow cytometry and sequencing? provenance
- Which entry fits karyotyping? action
History
History.
History
History.
- How was polyploidy discovered and studied, from early cytogenetics to genome sequencing? provenance
- Which entry fits the history of genetics? action
What the second pass must settle
- Should allopolyploidy and human triploidy be separate entries?
- How should genetics references be linked?
- The registry entry has merged aliases naming ploidy levels and a mosaic condition; should they be split off?