autopolyploid
C2Technical/Scientific
Definition
Meaning
An organism or cell that has more than two complete sets of chromosomes, all derived from the same species.
In a broader biological context, the state or condition of having undergone genome duplication within a single species, often leading to increased cell size and potential for evolutionary novelty, though often with reduced fertility.
Linguistics
Semantic Notes
The term is fundamentally taxonomic and descriptive within genetics and evolutionary biology. It contrasts with 'allopolyploid', where chromosome sets come from different species. It describes a specific mechanism of polyploidy.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling and pronunciation are consistent.
Connotations
Identical technical connotations in both varieties.
Frequency
Extremely rare outside academic genetics/botany. Frequency is identical in both UK and US scientific literature.
Vocabulary
Collocations
Grammar
Valency Patterns
[Organism] is an autopolyploid.The [species] arose via autopolyploidy.Researchers identified the specimen as autopolyploid.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No established idioms for this technical term]”
Usage
Context Usage
Business
Not used.
Academic
Core term in genetics, evolutionary biology, and botany for describing a specific type of whole-genome duplication.
Everyday
Virtually never used.
Technical
Precise descriptor in scientific papers, taxonomic descriptions, and genetic analyses.
Examples
By Part of Speech
verb
British English
- The species is thought to have autopolyploidised relatively recently in its evolutionary history.
American English
- The research suggests the population may have autopolyploidized after the last glacial period.
Examples
By CEFR Level
- [Too advanced for A2 level]
- [Too advanced for B1 level]
- Some plants can become autopolyploid, which means they duplicate their own chromosomes.
- The botanist identified the specimen as an autopolyploid, noting that its chromosome sets were all derived from a single ancestral species, unlike the allopolyploid wheat in the adjacent plot.
Learning
Memory Aids
Mnemonic
Think 'AUTOmatic duplication from ONE source': AUTO (self) + POLY (many) + PLOID (sets of chromosomes) = many chromosome sets from the same species.
Conceptual Metaphor
A photocopier making multiple identical copies of the same book (genome), versus a merger of two different books (allopolyploidy).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate as 'автополиплоидный' without confirming the exact Russian equivalent in the relevant subfield (often 'аутополиплоидный'). The 'auto-' prefix is Greek for 'self', not related to automobiles.
Common Mistakes
- Confusing it with 'allopolyploid'. Using it to describe any organism with extra chromosomes (aneuploidy). Incorrectly using it as a verb (e.g., 'The plant autopolyploided').
Practice
Quiz
What is the key distinction of an autopolyploid?
FAQ
Frequently Asked Questions
Autopolyploids have multiple chromosome sets from the same species (e.g., self-duplication). Allopolyploids have sets from two or more different, though often related, species (e.g., via hybridization and duplication).
Often, they have difficulty due to uneven chromosome pairing during meiosis, which can lead to reduced fertility, though not always complete sterility.
It is relatively rare in animals compared to plants, as the sex-determination mechanisms in many animals are disrupted by whole-genome duplication.
It can lead to larger cell size, which may result in bigger fruits, flowers, or vegetative parts. Some crop varieties, like certain potatoes and bananas, are autopolyploids.