heteroploid: meaning, definition, pronunciation and examples
Very Low / SpecialistTechnical / Scientific
Quick answer
What does “heteroploid” mean?
Having a chromosome number that is not an exact multiple of the basic haploid number for the species.
Audio
Pronunciation
Definition
Meaning and Definition
Having a chromosome number that is not an exact multiple of the basic haploid number for the species.
Describing a cell or organism possessing an abnormal number of chromosomes that is not a simple multiple (euploid) of the haploid set. This includes aneuploidy (e.g., trisomy, monosomy) and other non-multiples.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Usage is identical in scientific contexts.
Connotations
Negative in biological/medical contexts, implying genetic abnormality, instability, or disease (e.g., cancer cells). Neutral in purely descriptive botanical or evolutionary biology contexts.
Frequency
Extremely rare in both varieties outside highly specialized literature. No discernible frequency difference.
Grammar
How to Use “heteroploid” in a Sentence
[to be] heteroploidheteroploid [noun]Vocabulary
Collocations
Examples
Examples of “heteroploid” in a Sentence
verb
British English
- The cell line appeared to heteroploidise after prolonged exposure to the mutagen.
American English
- The tumor cells heteroploidized over successive generations.
Usage
Meaning in Context
Business
Not used.
Academic
Exclusively used in genetics, cell biology, oncology, and botany research papers and textbooks.
Everyday
Virtually never used.
Technical
Core term in cytogenetics for describing abnormal chromosome complements in cells, tissues, or organisms.
Watch out
Common Mistakes When Using “heteroploid”
- Misspelling as 'heteroplooid' or 'hetroploid'.
- Confusing it with 'heterozygous'.
- Using it in non-biological contexts.
FAQ
Frequently Asked Questions
Aneuploidy is the most common type of heteroploidy. 'Heteroploid' is a broader term for any chromosome number that is not an exact multiple of the haploid set, while 'aneuploid' specifically refers to a number that is not an exact multiple due to the gain or loss of individual chromosomes.
Yes, heteroploidy is common in plants and can sometimes lead to new species (polyploidy, a type of euploidy, is more significant in plant evolution). Aneuploidy (heteroploidy) is often detrimental but can be studied in agricultural science.
No. Triploidy is a type of euploidy (a multiple of the haploid set, just not the typical diploid 2n). Heteroploid specifically refers to numbers that are *not* exact multiples (e.g., 2n+1, 2n-1).
Heteroploidy, especially aneuploidy, is a hallmark of many genetic disorders (e.g., Down syndrome - trisomy 21) and is nearly universal in solid tumours, where it is associated with genomic instability, progression, and poor prognosis.
Having a chromosome number that is not an exact multiple of the basic haploid number for the species.
Heteroploid is usually technical / scientific in register.
Heteroploid: in British English it is pronounced /ˈhɛt.ər.əˌplɔɪd/, and in American English it is pronounced /ˈhɛt̬.ɚ.əˌplɔɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'HETERO-' means 'different' + '-PLOID' relates to chromosome sets. A heteroploid has a DIFFERENT (abnormal) number of chromosome sets.
Conceptual Metaphor
A library with an incorrect, non-multiple number of bookshelves (where each shelf is a chromosome set).
Practice
Quiz
In which field is the term 'heteroploid' MOST likely to be used?