Meiosis
Cell division producing four genetically unique haploid cells for sexual reproduction.
Also: reduction division
Definition
Meiosis is a specialized type of cell division that produces four genetically unique haploid cells (gametes) from a single diploid parent cell. It involves two rounds of division (meiosis I and II) and includes crossing over, where homologous chromosomes exchange segments, generating genetic diversity. Meiosis is the basis of sexual reproduction and is responsible for the heritable variation seen in offspring.
Example
“In human males, meiosis in the testes produces sperm cells each with 23 chromosomes (half the normal 46), and because crossing over shuffles genetic material, every sperm is genetically unique.”
Usage Examples
- 1
“The team applied meiosis best practices to improve their biology outcomes significantly.”
- 2
“Understanding meiosis is essential for anyone building a career in STEM.”
When & How to Use
Use 'Meiosis' when working in Biology contexts where meiosis is a specialized type of cell division that produces four genetically unique haploid cells (gametes) from a single diploid parent cell.
- ▸Applying meiosis principles during a biology project or initiative
- ▸Explaining meiosis to a junior team member or stakeholder unfamiliar with STEM
- ▸Evaluating options or proposals using meiosis as a decision-making criterion
Etymology & Origin
The term 'Meiosis' derives from professional usage and entered STEM professional usage as the field formalised in the 20th century.
History & Evolution
The concept of meiosis has evolved alongside STEM. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of biology in the mid-20th century. Today, meiosis is a standard part of STEM practice globally.
Synonyms
- reductive division
- gamete formation
- sexual cell division
Antonyms / Opposites
- mitosis
- asexual reproduction
Images
CC-licensed · free to useVideo
Related Terms
- Mitosis
- Cell Division
- Gamete
- Chromosome