reproductive fitness
An organism's ability to survive and produce viable offspring that can themselves reproduce.
Full Definition
Reproductive fitness, in the context of reproductive genetics, measures an individual's capacity to contribute genes to the next generation through successful reproduction. This encompasses not only the ability to conceive and carry pregnancies to term, but also the production of offspring who survive to reproductive maturity. Genetic variants that reduce reproductive fitness are subject to negative selection pressure, while those that enhance it may become more prevalent in populations over time. Understanding reproductive fitness is crucial for predicting the persistence of genetic disorders in populations.
Usage
Usage note: Distinguish from 'fertility' which refers specifically to the ability to conceive.
In Context
- "The genetic variant showed reduced reproductive fitness due to increased pregnancy loss rates." — Population genetics study
- "Carriers of the balanced translocation demonstrated normal reproductive fitness despite increased aneuploidy risk." — Genetic counseling research