progeny
Meaning of progeny: Genetics borrows the word for any generation descended from a defined parent, whether that parent is an organism, a cell or a virus.
Definition of progeny
Progeny are the offspring produced by reproduction or replication. The word applies at any scale: the children of a couple, the seeds of a plant, the two daughter cells left after a cell divides, or the new virus particles released from an infected cell. It is a collective noun and keeps the same form whether one descendant or a great many are meant.
How is the word used in genetics?
Genetics needs a neutral word for the generation that follows a defined cross, and progeny is it. In breeding and in the study of inherited conditions, the parents are one generation and their progeny are counted and scored for the trait in question. Ratios among the progeny were the original evidence that traits are carried by discrete units rather than blended, and the same logic still underlies pedigree analysis in genetics clinics. Progeny testing means judging a parent not by its own appearance but by how its offspring turn out, which is the only way to detect a recessive variant a healthy-looking parent carries silently.
What does progeny mean at the level of cells and viruses?
Below the level of the whole organism the word describes copies rather than children. A virus that enters a cell hijacks the machinery there and directs the production of progeny virions, which leave and infect further cells; how quickly that happens shapes how fast an infection spreads. A dividing cell produces two progeny cells, and all the cells descended from one starting cell are its clonal progeny, a phrase used constantly in cancer biology because a tumor is generally the progeny of a single altered cell. The accuracy of DNA replication determines how faithfully the parent's genetic material reaches those progeny.
How does it differ from similar words?
| Word | What it covers |
|---|---|
| Progeny | The immediate generation produced, at any biological scale |
| Offspring | The same idea in ordinary English, usually about whole organisms |
| Descendants | All later generations, not only the first |
| Clone | Progeny that are genetically identical to the parent |
Used in a sentence
The study tracked the inherited trait across several generations of progeny.
Good to know
Progeny can describe the offspring of a whole organism or, in laboratory contexts, the cells or virus particles produced when a cell or virus replicates, and the surrounding context indicates which sense applies.
Word origin
Where “progeny” comes from
From Latin progenies, formed from pro-, meaning forth, and gignere, meaning to beget, describing offspring brought forth from a parent.